JP7698474B2 - Mounting structure of elastic water-stopping member in waterproof shutter - Google Patents

Description

The present invention relates to a waterproof shutter.

In recent years, sudden heavy rains caused by abnormal weather have become more frequent, causing flooding of subway stations and building basements in urban areas. In an emergency, it may be necessary to install them at the entrances of buildings to prevent water from entering the building from the outside. In addition, there may be cases where it is necessary to close building openings in a watertight state to prevent water from entering the building, not just during sudden heavy rains.

As exemplified in Patent Document 1, a waterproof panel shutter has been proposed that closes a building opening in a watertight state. In the waterproof panel shutter, when the opening is fully closed, a watertight structure is formed by sealing the gap between the lower end portion of the upper panel and the upper end portion of the lower panel with an elastic watertight member that extends across the entire width of the panel and is pressed between the lower end portion of the upper panel and the upper end portion of the lower panel.

Since this elastic water-stopping member forms the water-stopping structure of the waterproof panel shutter when the shutter curtain is in the fully closed position, it is an important element in the waterproof shutter, and it is desirable to have a configuration that can more reliably form the water-stopping structure. In addition, the elastic water-stopping member is attached to the panel by fitting it into a groove or pocket formed in a predetermined portion of the panel, but the elastic water-stopping member is subjected to the panel's own weight, and further, when the water-stopping structure is formed (especially when vertically compressed by the vertical compression means), a compressive force is applied to the elastic water-stopping member, which may cause the elastic water-stopping member to deform within the groove, which may affect the water-stopping performance of the water-stopping structure.
Patent Publication 2015-175155

The present invention aims to provide an attachment structure for an elastic water-stopping member in the water-stopping structure of a waterproof shutter.

The technical means adopted in the present invention are:
A waterproof shutter is provided with a shutter curtain made up of a plurality of panels, and the shutter curtain is vertically compressed in a fully closed position by a vertical compression means.
The shutter curtain is provided with a long elastic water-stopping member fitted into a groove extending in the width direction of the panel, and when the shutter curtain is in a vertically compressed state, the elastic water-stopping member is pressed by a portion of the shutter curtain to form a water-stopping structure;
The elastic water-stopping member includes a hard elastic portion located within the groove and a soft elastic portion having a portion located outside the groove.
The present invention relates to a mounting structure for an elastic water-stopping member in a waterproof shutter.
In one embodiment, the groove is formed in the indoor portion near the upper end of the panel,
The shutter curtain portion is an indoor side portion near the lower end of the panel located above the panel.
In one embodiment, the bottom panel at the lower end of the shutter curtain comprises a panel body and a movable seat plate provided at the lower end of the panel body,
The groove is formed in the movable seat plate,
The shutter curtain portion is the lower surface of the panel body.

In one aspect, the groove portion has a bottom (325; 60) on the indoor side, an inner surface (310; 62) of an outer facing piece rising from the outer end of the bottom, and a first portion (3240; 640) of the inner facing surface facing the outer facing piece of the inner facing surface located inside the bottom,
the inner facing surface includes a second portion of the inner facing surface adjacent the first portion and positioned outside the groove;
The hard elastic portion of the elastic water-stopping member is fitted into the groove portion,
A portion of the soft elastic portion of the elastic water-stopping member is located within the groove portion.
In one embodiment, the portion of the soft elastic portion located within the groove is in intimate contact with the inner surface of the outer end piece.

In one aspect, the hard elastic portion includes a bottom surface, an inner facing portion, an outer facing portion, and a first connecting surface,
the soft elastic portion includes an abutment surface, an inner facing surface, an outer facing surface, and a second connecting surface in close contact with the first connecting surface,
the first connection surface of the hard elastic portion includes a first horizontal surface and a first inclined surface inclined from an outer side of the first horizontal surface toward a bottom surface,
the second connection surface of the soft elastic portion includes a second horizontal surface and a second inclined surface inclined from an outer side of the second horizontal surface so as to move away from the upper surface,
the first horizontal surface and the second horizontal surface, and the first inclined surface and the second inclined surface are in close contact with each other,
The outer facing surface of the soft elastic portion includes a first portion of the outer facing surface that is in close contact with the inner surface of the outer facing piece, and a second portion of the outer facing surface that is located outside the groove portion,
At least a portion of the outer visible surface surrounded by the first portion and the second inclined surface is located within the groove portion.

When the elastic water-stopping member is in a vertically compressed position, the second portion of the outer facing surface bulges outward from the outer surface of the outer facing piece, and the portion of the second portion of the outer facing surface adjacent to the first portion of the outer facing surface is in close contact with the tip edge of the outer facing piece.

In one embodiment, the inner attachment portion of the hard elastic portion includes an inner attachment surface and a plurality of protrusions formed on the inner attachment surface and extending in the panel width direction,
The inner facing portion of the hard elastic portion abuts against the first portion of the inner facing surface of the groove portion via the ridge.
When the elastic water-stopping member is fitted into the groove portion, the inner facing portion of the hard elastic part abuts against the first part of the inner facing surface of the groove portion via the protrusion, thereby pressing the outer facing portion of the elastic water-stopping member against the inner surface of the outer facing piece of the groove portion.

In one embodiment, the inner facing surface of the hard elastic portion and the inner facing surface of the soft elastic portion are flush with each other,
The inner facing surface of the soft elastic portion is adjacent to the inner facing surface of the groove portion in the non-vertical compression position, and is in close contact with the inner facing surface in the vertical compression position.
In one aspect, the inner facing surface of the soft elastic portion is in close proximity to the second portion of the inner facing surface of the groove portion in a non-vertical compression position, and is in close contact with the second portion of the inner facing surface in a vertical compression position.
This prevents water from entering between the inner visible surface of the soft elastic portion and the inner visible surface of the groove portion (second portion) in the waterproof structure (vertical compression position).

In one aspect, a protrusion is formed on the outer facing portion of the hard elastic portion so as to protrude at an angle away from the bottom of the groove portion, and the hard elastic portion is in close contact with the inner surface of the outer facing portion via the protrusion.
When the elastic water-stopping member is fitted in the groove, the protruding piece acts as a resistance to prevent the elastic water-stopping member from slipping out of the groove.

In the present invention, the elastic water-stopping member is formed from a hard elastic portion that is located within the groove and serves as the base (foundation), and a soft elastic portion that has a portion that is located outside the groove.This allows the soft elastic portion to be pressed well to form a watertight structure, while deformation of the base (foundation) within the groove is suppressed as much as possible, thereby stably maintaining the watertight structure.
When the elastic water-stopping member is fitted into the groove, the portion of the soft elastic part located within the groove is pressed against the inner surface and tip edge of the outer facing piece, thereby more reliably preventing water from entering through the interface between the inner surface of the groove and the elastic water-stopping member.

FIG. 2 is a front view of the waterproof shutter (fully closed position) according to the embodiment, as viewed from the indoor side. 1 is a vertical cross-sectional view of a waterproof shutter according to this embodiment, with the left side being the outdoor side and the right side being the indoor side. This is a front view of the shutter curtain of the waterproof shutter of this embodiment as seen from the indoor side, and a diagram showing the vertical compression mechanism above the shutter curtain. This is a diagram showing a longitudinal cross-sectional view of the shutter curtain of the waterproof shutter of this embodiment and the vertical compression mechanism, where the left figure shows the state before the shutter curtain is in the fully closed position, the center figure shows the shutter curtain in the fully closed position (non-vertical compression state), and the right figure shows the shutter curtain in the fully closed position (vertical compression state). This is a cross-sectional view of the end portion in the opening width direction of the panel shutter in a fully closed position (non-horizontal compression state), and is a partially enlarged view of the upper part of Figure 34. 30 is a cross-sectional view of the end portion in the opening width direction of the panel shutter in the fully closed position (horizontally pressed state), and is a partially enlarged view of the upper part of FIG. 29 . FIG. 11 is a partial vertical cross-sectional view of a panel shutter in a fully closed position (vertical compression state/horizontal compression state). 1A and 1B are a top view and a front view of a top panel according to the present embodiment as viewed from the indoor side. FIG. 9 is a partially enlarged view of the top view of FIG. 8 . FIG. 2 is a vertical cross-sectional view (viewed from direction A) of the top panel according to the present embodiment, with the left side being the outdoor side and the right side being the indoor side. FIG. 2 is a side view of the top panel according to the present embodiment, with the left side being the indoor side and the right side being the outdoor side. 1A and 1B are a top view and a front view, respectively, of a panel (intermediate panel) according to the present embodiment, as viewed from the indoor side. FIG. 2 is a front view of the panel (middle panel) according to the present embodiment, showing the spaces partitioned within the panel. FIG. 12 is a partially enlarged view of the top view of FIG. 11 . FIG. 2 is a vertical cross-sectional view (viewed from direction B) of a panel (intermediate panel) according to this embodiment, with the left side being the outdoor side and the right side being the indoor side. 2A and 2B are a front view and a bottom view of the panel (intermediate panel) according to the embodiment, as viewed from the outdoor side. FIG. 2 is a side view of the panel (middle panel) according to the present embodiment, with the left side being the indoor side and the right side being the outdoor side. 2 is a front view of the bottom panel according to the embodiment, seen from the indoor side. FIG. FIG. 2 is a vertical cross-sectional view (viewed from direction C) of the bottom panel according to the present embodiment, with the left side being the outdoor side and the right side being the indoor side. FIG. 2 is a side view of the bottom panel according to the present embodiment, with the left side being the indoor side and the right side being the outdoor side. This shows the lower end portion of the bottom panel (movable seat plate) according to this embodiment, with the upper figure being a front view and the lower figure being a bottom view. FIG. 5 is a partially enlarged view of the center portion of FIG. 4, showing the state in which the lower end portion of the upper panel and the upper end portion of the lower panel are fitted together in the fully closed position and in the non-vertical compression state. 5 is a partially enlarged view of the right side of FIG. 4, showing the state in which the lower end portion of the upper panel and the upper end portion of the lower panel fit together in the fully closed position and vertically compressed state. The left image shows the upper and lower panels descending in a vertical position, the center image shows the upper panel displaced toward the inside of the room relative to the lower panel as it descends, and the right image shows the upper panel displaced toward the outside of the room relative to the lower panel as it descends. FIG. 5 is a partially enlarged view of the left side of FIG. 4, showing the lower end portion of the bottom panel before landing on the floor. FIG. 5 is a partially enlarged view of the center part of FIG. 4, showing the lower end part of the bottom panel when the device is placed on the floor (non-vertical compression state). FIG. 5 is a diagram showing a state in which an elastic water-stopping member is fitted into a groove in an indoor side portion of a panel (a partially enlarged view of the indoor side portion in the left diagram of FIG. 4). FIG. 21 is a partial enlarged view of the indoor side portion in FIG. 20 , illustrating a state in which the elastic water-stopping member fitted in the groove is vertically compressed in the fully closed position. FIG. 23 is a diagram showing a state in which the elastic water-stopping member is fitted into a groove in the indoor side portion of the base plate (unpressed state), and is a partially enlarged view of the indoor side portion in FIG. 22 . FIG. 4 shows a state in which the elastic water-stopping member fitted in the groove is vertically compressed in the fully closed position (a partially enlarged view of the outdoor side portion in the right diagram of FIG. 4). This is a cross-sectional view of the panel shutter of this embodiment in a fully closed position (horizontally compressed state), where the upper figure is a cross-sectional view of the intermediate panel or bottom panel, the middle figure is a cross-sectional view of the movable seat plate portion of the bottom panel, and the lower figure is a bottom view of the seat plate. 1 is a diagram showing the positional relationship between an elastic water-stopping member and a watertight rubber member provided across the width of the indoor side of the shutter curtain. FIG. 10 is a vertical cross-sectional view of a lower portion including a bottom panel in a fully closed position (vertical compression state/horizontal compression state) of the panel shutter according to the embodiment. FIG. 23 is a partially enlarged view of FIG. 22 showing a relay cable of the cord reel (a cover for storing the relay cable is not shown). 10 is a partially enlarged view showing the portion of the cord reel from which the cord is pulled out on the indoor facing surface of the bottom panel. FIG. This is a cross-sectional view of the panel shutter of this embodiment in a fully closed position (non-horizontal compression state), where the upper figure is a cross-sectional view of the intermediate panel or top panel, the middle figure is a cross-sectional view of the movable seat plate portion of the bottom panel, and the lower figure is a view of the bottom of the seat plate. 13A and 13B are longitudinal cross-sectional views of the shutter curtain in a fully closed position (non-vertical compression state), the left figure being a longitudinal cross-sectional view of the middle part of the panel in the width direction, and the right figure being a longitudinal cross-sectional view of the end part of the panel in the width direction. This is a partially enlarged view of the right figure in Figure 35. 1 is a diagram showing the positional relationship between an airtight member provided across the width of the outdoor portion of the shutter curtain and a smoke-blocking material provided on a guide body. 13A and 13B are diagrams showing another embodiment of the airtight structure when the shutter curtain is in a fully closed position. 13A and 13B are diagrams showing still another embodiment of the airtight structure when the shutter curtain is in a fully closed position. FIG. 2 is a block diagram showing the operation flow of the waterproof shutter according to the present embodiment in the event of a fire.

[A] Configuration of the Panel Shutter The waterproof shutter according to this embodiment is composed of a panel shutter and has the basic structure of a panel shutter. As shown in Figs. 1 to 4, the shutter curtain 1 of the waterproof shutter according to this embodiment is composed of a top panel 2 (sometimes abbreviated to "panel 2"), a plurality of intermediate panels 3 (hereinafter referred to as "panel 3"), and a bottom panel 4 (sometimes abbreviated to "panel 4") connected in the panel height direction. In addition, it should be noted that when the term "panel" is used in this specification, it can basically include the top panel 2, the panel 3, and the bottom panel 4. In this embodiment, the bottom panel 4 is composed of a bottom panel main body 4' (sometimes abbreviated to "panel main body 4'" or "main body 4'") and a movable seat plate 6 (sometimes abbreviated to "seat plate 6"). The waterproof shutter according to this embodiment has fireproof and smokeproof properties in addition to waterproof properties, and each panel 2, 3, and 4 is a steel panel formed from steel that has excellent heat resistance and fire resistance, which is different from conventional aluminum panels. The detailed configuration of each panel 2, 3, 4, and the waterproof structure and fireproof and smokeproof structures of the waterproof shutter according to this embodiment will be described in detail later. Please note that in this specification, the terms "outdoor side" and "indoor side" are used to indicate the relative positions of parts of components in addition to indicating the positions of the "outdoor side" and "indoor side" on either side of the opening that is opened and closed by the shutter curtain 1.

The basic structure of a panel shutter will now be described. A support shaft 10 with a guide roller 11 is protruding from both widthwise ends of each of the panels 2, 3, and 4 that make up the shutter curtain 1 (see Figures 5 and 6), and each panel 2, 3, and 4 is connected to a chain (not shown) via the support shaft 10 and suspended to form the shutter curtain 1. The structure of suspending multiple panels by chains in a panel shutter is well known to those skilled in the art, so a detailed explanation will be omitted.

The left and right guide bodies 5 are erected at both widthwise ends of the building opening, and are designed to receive and guide both widthwise ends of the shutter curtain 1 in a vertical position. As shown in Figures 5 and 6, the guide body 5 is a structure that is formed in a U-shape in cross section from a first side wall 50 on the outdoor side and a second side wall 51 on the indoor side, which are spaced apart and opposed to each other, and extends in the opening height direction. The tip sides of the first side wall 50 on the outdoor side and the second side wall 51 on the indoor side are formed with an outdoor side bent piece 500 and an indoor side bent piece 510 so as to face each other, and the opening groove between the tips of the outdoor side bent piece 500 and the indoor side bent piece 510 is designed to receive the widthwise end of the shutter curtain 1 (top panel 2, panel 3, bottom panel 4). The bottom wall 52 of the guide body 5 is provided with a guide member 53, which is a long member that extends vertically in the height direction and contacts and guides the outdoor side peripheral surface of the guide roller 11. A long fin 54 (e.g., made of nylon) is formed on the outside of the outdoor bent piece 500 and the indoor bent piece 510 at the tip side of the first side wall 50 on the outdoor side and the second side wall 51 on the indoor side, respectively. The upper end of the guide member 53 extends into the storage space above the opening and has an upper extension 5' (see Figure 2), which is configured to be able to contact the guide roller 11 from both the outdoor side and the indoor side.

In the storage space above the opening, a sprocket 12 is provided at approximately the upper end of the upper extension 5' for winding a chain around it, and the opening/closing machine M rotates the sprocket 12 to lift or unleash the chain, thereby raising or lowering the shutter curtain 1 to open or close the building opening. The storage space for the shutter curtain 1 above the opening extends from above the opening toward the indoor side, and in this storage space, a storage rail 13 is provided that extends gently downward from the front (outdoor side) to the rear (indoor side). By lifting the chain, the panels 2 and 3 are transferred to the storage rail 13 via the sprocket 12, and the guide rollers 11 are guided by the storage rail 13 and sent sequentially to the rear of the storage space, so that the panels 2, 3, and 4 are stored while being held hanging parallel to each other.

The panel shutter according to this embodiment is an electric panel shutter, and the electric opening and closing of the shutter curtain 1 is performed by operating the opening and closing switches (not shown) in the switch boxes SB1-3. When the opening switch (not shown) is pressed with the opening and closing machine M rotating the sprocket 12 in the chain lifting direction, the shutter curtain 1, which is in a vertical position in the fully closed state, rises as the chain rises, with both ends in the width direction being guided by the vertical guide body 5, and is sequentially transferred from the top panel 2 to the storage rails 13 extending horizontally from the upper extension 5' of the guide body 5, and is stored in parallel in the storage space, opening the opening.

When the opening is fully open, pressing the closing switch (not shown) rotates the sprocket 12 in the chain payout direction using the opening/closing machine M, and the panels 2 and 3 stored in parallel are guided by the storage rails 13 with the guide rollers 11 at both ends in the width direction, and are successively pulled out from the rear (indoor side) of the storage space to the front (outdoor side) of the sprocket 12 side. As they pass the sprocket 12, they assume a vertical position above and below each other in the height direction and descend while being guided by the guide body 5, closing the opening.

When the shutter curtain 1 descends, the upper end of the lower panel and the lower end of the upper panel of any two adjacent panels (top panel 2 and panel 3, panels 3 together, and panels 3 and bottom panel 4) are spaced apart (see the left diagram in Figure 4 and the left diagram in Figure 21). When the shutter curtain descends, after the lower end of the bottom panel 4 hits the floor, the shutter curtain 1 continues to descend a predetermined distance, so that the upper end of the lower panel and the lower end of the upper panel of any two adjacent panels come into at least partial contact, resulting in a fully closed state (see the center diagram in Figure 4 and Figure 19).

The bottom panel 4 of the shutter curtain 1 in this embodiment is composed of a bottom panel main body 4' and a movable seat plate 6 provided at the lower end of the bottom panel main body 4', and the first obstacle detection means is composed of the movable seat plate 6 and a detection switch SW provided at the lower end of the bottom panel main body 4'. When the movable seat plate 6 at the lower end of the bottom panel 4 lands on the floor or abuts against an obstacle and moves upward relatively a predetermined amount, the detection switch SW turns ON and an obstacle detection signal is sent to the control unit of the opening/closing machine M via the cord reel CR (wired type), causing the shutter curtain 1 to stop during descent. The control unit has preset upper and lower limits for the shutter curtain 1, and if an obstacle detection signal is received above the lower limit, it is determined that an obstacle has been detected while the shutter curtain is descending, and the shutter curtain 1 is controlled to stop for 1 second, for example, and then reverse and rise for 1.5 seconds while descending, and if an obstacle detection signal is received below the lower limit, it is determined to be in a fully closed position (landed on the floor FL), and the descent of the shutter curtain 1 is stopped without reversely ascending. In addition, the transmission of the obstacle detection signal is not limited to a wired system, but may be a wireless system (for example, wirelessly transmitted by radio waves).

A photoelectric sensor 14, which is exemplified as a second obstacle detection means, is provided at a predetermined height from the floor below the opening. In the illustrated embodiment, four photoelectric sensors 14 are provided on the outdoor side and indoor side, at heights of 150 mm and 500 mm from the floor. The height positions of the photoelectric sensors 14 are merely examples, and are not limited to these. In this embodiment, if an obstacle is detected while the shutter curtain is descending, the descending shutter curtain stops for, for example, one second, and then reverses and rises for 1.5 seconds.

The basic structure of a panel shutter has been explained with reference to the drawings, but as the basic structure of a panel shutter is well known to those skilled in the art, further detailed explanation will be omitted. In addition, many modified and improved examples of panel shutters are known to those skilled in the art, and it should be noted that the structure of the panel shutter that can be applied to the waterproof shutter of the present invention is not limited to the embodiment shown in the drawings.

[B] Configuration of the Waterproof Shutter The panel shutter according to this embodiment functions as a waterproof shutter by providing a waterproof structure to the shutter curtain 1 in the fully closed state. In this embodiment, the means for making the panel shutter in the fully closed state waterproof is composed of a vertical compression mechanism 7 that vertically compresses the shutter curtain 1 in the fully closed state downward, and a horizontal compression mechanism 8 that horizontally compresses the shutter curtain 1 compressed vertically by the vertical compression mechanism 7 toward the indoor side as a whole. The configurations and operations of the vertical compression mechanism 7 and horizontal compression mechanism 8 are described below, but for further details of the configuration of the waterproof shutter, refer to Patent Document 1.

[B-1] Vertical Compression Mechanism As shown in Fig. 1, a plurality of vertical compression mechanisms 7 are provided in the storage space above the opening across the width of the opening. As shown in Fig. 3 and Fig. 4, the vertical compression mechanism 7 includes a power cylinder 70, which is an example of an actuator arranged in the storage space above the opening, and a pressing part (consisting of a link mechanism) 72, which is provided at the tip of a piston rod 71 of the power cylinder 70 and abuts against and presses the upper end of the uppermost panel 2 in the fully closed state. When the opening is fully closed, the piston rod 71 is lowered, and the pressing part 72 abuts against the upper end of the uppermost top panel 2 and presses downward, thereby vertically compressing the shutter curtain 1 in the fully closed state downward.

When the shutter curtain 1 is in a fully closed state, it is vertically compressed, so that the elastic water-stopping member (in this embodiment, elastic water-stopping member 16) extending across the entire width of the panel is pressed between the lower end of the upper panel and the upper end of the lower panel of two adjacent panels (panel 2 and panel 3, panel 3 and panel 3, panel 3 and panel 4) vertically, forming a water-stopping structure. Between the panel body 4' of the bottom panel 4 and the movable seat plate 6, the elastic water-stopping member (in this embodiment, indoor side elastic water-stopping member 16β) extending across the entire width of the panel is pressed, forming a water-stopping structure. Between the movable seat plate 6 and the floor surface FL, the elastic water-stopping member (in this embodiment, elastic water-stopping member 19) extending across the entire width of the panel is pressed, forming a water-stopping structure.

As shown in FIG. 2, the vertical compression mechanism 7 is positioned toward the outside with respect to the lifting and lowering paths of each panel so as not to impede the lifting and lowering of each panel in the storage space above the opening. Therefore, in order to press the upper end of the topmost top panel 2 in the fully closed state, the piston rod 71 of the power cylinder 70 protrudes diagonally downward, but a pressing force acts vertically on the upper end of the top panel 2 by a pressing part 72 consisting of a link mechanism.

As shown in Figures 1 and 3, in this embodiment, three vertical compression mechanisms 7 are provided at intervals in the opening width direction. More specifically, one vertical compression mechanism 7 is provided in the center of the opening width direction, and vertical compression mechanisms 7 are provided at positions closer to the left and right guide bodies 5, with the distance between the central vertical compression mechanism 7 and the left vertical compression mechanism 7 being the same as the distance between the central vertical compression mechanism 7 and the right vertical compression mechanism 7. There is no limit to the number of vertical compression mechanisms 7, and an appropriate number is selected depending on the width dimension (opening width dimension) of the shutter curtain 1 (panels 2, 3, 4), etc.

The vertical compression mechanism 7 according to this embodiment is equipped with a first limit switch and a second limit switch. When the vertical compression mechanism 7 is in a non-operating state, a movable part of the vertical compression mechanism 7 is in contact with the first limit switch, and the second limit switch is in a non-contact state. When the vertical compression mechanism 7 is operated and the piston rod 71 protrudes to a predetermined compression position, the first limit switch is in a non-contact state, and the movable part is in contact with the second limit switch. The first limit switch and the second limit switch constitute a vertical compression state detection means. Specifically, when the first limit switch is ON (the second limit switch is OFF), the non-vertical compression state is detected, when the first limit switch is OFF and the second limit switch is OFF, the vertical compression operation or the vertical compression release operation is in progress, and when the second limit switch is ON (the first limit switch is OFF), the vertical compression state is detected. In this embodiment, when the first limit switch changes from OFF to ON, the vertical compression mechanism 7 releases compression, and when the second limit switch changes from OFF to ON, the vertical compression mechanism 7 completes compression.

[B-2] Horizontal compression mechanism As shown in FIG. 1, horizontal compression mechanisms 8 are provided at the left and right ends of the opening width direction in the storage space above the opening. As with the vertical compression mechanism 7, the horizontal compression mechanism 8 is provided biased toward the outdoor side with respect to the ascending and descending path of the panels 2, 3, 4 so as not to impede the ascending and descending of the panels 2, 3, 4 in the storage space above the opening. As shown in FIG. 1, the horizontal compression mechanism 8 includes a power cylinder 80, which is an example of an actuator disposed in the storage space above the opening, and a horizontal pressing member 82 (see FIG. 5 and FIG. 6) that operates in conjunction with the up and down movement of the piston rod 81 of the power cylinder 80. The horizontal pressing member 82 of the horizontal compression mechanism 8 is a long member having a rectangular cross section and extending in the height direction, and is provided on the inner surface of the tip side of the first side wall 50 on the outdoor side of the guide body 5. A watertight rubber member 55, which is a long member extending in the height direction, is provided on the inner surface of the tip side of the second side wall 51 on the indoor side. The horizontal compression mechanism 8 presses both widthwise ends of the indoor side of the shutter curtain 1 in the fully closed position (vertical compression state) against a watertight rubber member 55, thereby forming a water-stopping structure in the height direction at both widthwise ends of the shutter curtain 1 in the fully closed position.

5 and 6, the horizontal pressing member 82 extends in the indoor/outdoor direction along the outdoor bent piece 500 in a plan view, and includes a first member (outdoor member) 820 that is long and U-shaped in cross section and extends vertically along the guide body 5, a second member (indoor member) 821 that is long and U-shaped in cross section and extends vertically along the guide body 5, and an operating rod 822. The operating rod 822 is a long member that extends vertically along the guide body 5, and the upper end side of the operating rod 822 is connected to the tip of the piston rod 81 of the power cylinder 80, and the operating mechanism is composed of the operating rod 822 and the power cylinder 80 (including the piston rod 81) that moves the operating rod 822 up and down. In this embodiment, the actuating rod 822 is configured to be pulled up in conjunction with the downward protruding motion of the piston rod 81, and the second member 821 moves horizontally toward the indoor side in conjunction with the upward movement of the actuating rod 822, pressing the outdoor side of the shutter curtain 1 with the pressing surface 8210, and pressing the indoor side against the watertight rubber member 55.

The horizontal compression mechanism 8 according to this embodiment is provided with a first limit switch and a second limit switch. When the horizontal compression mechanism 8 is in a non-operating state, a portion of the movable part of the horizontal compression mechanism 8 is in contact with the first limit switch, and the second limit switch is in a non-contact state. When the horizontal compression mechanism is operated and the piston rod 81 protrudes to a predetermined compression position, the first limit switch is in a non-contact state, and a portion of the movable part is in contact with the second limit switch. The first limit switch and the second limit switch constitute a horizontal compression state detection means. Specifically, when the first limit switch is ON (the second limit switch is OFF), the non-horizontal compression state is detected, when the first limit switch is OFF and the second limit switch is OFF, the horizontal compression operation or the horizontal compression release operation is in progress, and when the second limit switch is ON (the first limit switch is OFF), the horizontal compression state is detected. In this embodiment, when the first limit switch changes from OFF to ON, compression by the horizontal compression mechanism 8 is released, and when the second limit switch changes from OFF to ON, compression by the horizontal compression mechanism 8 is completed.

[B-3] Center Post As shown in Figures 1 and 2, in this embodiment, the waterproof shutter is equipped with a movable center post 9. The center post 9 is located on the indoor side of the shutter curtain 1 in the fully closed state, and is installed in close proximity to the indoor side of the shutter curtain 1. The center post 9 is designed to resist the water pressure acting from the outdoor side to the indoor side of the shutter curtain 1 in the fully closed position. In one embodiment, the center post 9 is installed by moving the shutter curtain 1 in the fully closed position to a waterproof state (vertical compression and horizontal compression) and then moving the center post 9 from the storage position to the installation position and installing it in close proximity to the indoor side of the shutter curtain 1.

[B-4] Operation control device for waterproof shutter The waterproof shutter according to this embodiment can be used as a so-called management panel shutter, and is used for normal opening and closing of building openings, and also functions as a waterproof shutter in emergencies such as when heavy rain is expected. The operation control of the electric waterproof shutter, which is the waterproof shutter according to this embodiment, is performed by input from the operation unit.

As shown in FIG. 2, the waterproof shutter according to this embodiment has three operating sections: a first outdoor switch box SB1, a second outdoor switch box SB2, and an indoor switch box SB3. The first outdoor switch box SB1 and the indoor switch box SB3 are positioned at a height of 1500 mm from the floor surface so that the operator can easily operate them while standing. The second outdoor switch box SB2 is positioned at a height of more than 3000 mm (assumed maximum water level W.L.) from the floor surface. The above height positions are examples and are not limiting.

The operation panel inside the switch box is provided with an open button, a close button, a stop button, a compression button, a compression release button, and an emergency close button. The operation of the waterproof shutter is controlled based on input from these buttons. More specifically, in accordance with instructions from button input, the operation of the opening/closing mechanism M (raising and lowering operation of the shutter curtain 1), the vertical compression mechanism 7 (vertical compression operation of the shutter curtain 1 in a fully closed state, vertical compression release operation), and the horizontal compression mechanism 8 (horizontal compression operation of the shutter curtain 1 in a vertical compression state, horizontal compression release operation) is controlled via the control unit. Each button is explained below.

The waterproof shutter according to this embodiment is equipped with a fully closed state detection means (e.g., consisting of a lower limit switch and a seat switch) that detects when the shutter curtain 1 is in a fully closed state, a vertical compression state detection means (first limit switch, second limit switch) that detects when the shutter curtain 1 is in a vertical compression state, and a horizontal compression state detection means (first limit switch, second limit switch) that detects when the shutter curtain 1 is in a horizontal compression state.

When the shutter is in the pressure release state (vertical pressure release state and horizontal pressure release state) and is not in the fully open position, pressing the open button will cause the shutter curtain 1 to rise and stop in the fully open position. When the shutter is not in the fully closed position, pressing the close button will cause the shutter curtain to fall and stop in the fully closed position. If the stop button is pressed while the shutter is operating, or during pressure operation or pressure release, the operating shutter curtain 1 will stop operating at any position.

When the shutter is not in the fully closed position and not in a compressed state (vertical compression state and horizontal compression state), pressing the compression button starts the compression operation to obtain a waterproof structure. When the pressing operation of the vertical compression mechanism 7 is completed (when the second limit switch of the vertical compression mechanism 7 turns ON, a vertical compression state signal is generated), the horizontal compression mechanism 8 starts the pressing operation, and compresses the shutter curtain 1, which has been compressed in the vertical direction, as a whole toward the indoor side. When the shutter is not in the fully closed position, pressing the emergency close button can lower the shutter curtain with a push-down operation.

When the shutter is in a compressed state, or when it is in the fully closed position and not in a compressed-release state, pressing the compression release button starts the compression release operation. In one procedure, when the compression release button is pressed, first the horizontal compression mechanism 8 starts the release operation, and when the release operation of the horizontal compression mechanism 8 is completed (when the first limit switch turns ON, a horizontal compression state release signal is generated), the vertical compression mechanism 7 starts the release operation. When the compression release operation of the vertical compression mechanism 7 is completed, the first limit switch of the vertical compression mechanism 7 turns ON and a vertical compression state release signal is generated. If the horizontal compression state has been released, the release operation starts from the vertical compression state.

In one embodiment, in addition to operation input from the first outdoor switch box SB1, the second outdoor switch box SB2, and the indoor switch box SB3, remote operation input from a management room or the like (operation while checking safety with a security camera or the like) is possible. A series of shutter operation control is possible by remote control signals, and it is also possible to perform compression and release operations by remote control.

[C] Shutter Curtain Configuration As shown in Figures 1 to 4, the shutter curtain 1 of the waterproof shutter according to this embodiment is configured by connecting a top panel 2, multiple panels 3, and a bottom panel 4 in the panel height direction. When the shutter curtain 1 is raised or lowered and in a fully closed position, the top panel 2, multiple panels 3, and bottom panel 4 are in a vertical position. The explanation of each part of the top panel 2, multiple panels 3, and bottom panel 4 (specifically, vertical, hanging, horizontal, etc.) will be mainly based on the vertical position of the panels.

[C-1] Top panel
[C-1-1] The configuration of the top panel 2 will be described with reference to the outline diagrams 8 to 10 of the top panel. The top panel 2 is a roughly horizontally rectangular plate-like body with a predetermined width, height, and thickness (projected dimensions) extending in the opening width direction, and is made up of an outdoor facing surface 20, an indoor facing surface 21, an upper surface portion 22, a lower surface portion 23, and side surfaces 24 on both ends in the width direction. As shown in Fig. 8, the top panel 2 has the same width dimension as a whole.

As shown in FIG. 10, the lower end portion of the outdoor facing surface 20 of the top panel 2 is formed as a step recessed toward the indoor facing surface 21. Specifically, the outdoor facing surface 20 is composed of a main surface 200 and a step formed below the main surface 200, and the step is formed from a lower edge 201 at the lower end of the main surface 200 and a lower outdoor facing surface (step facing surface) 202 that is displaced and hangs down toward the indoor facing surface 21 relative to the vertically oriented main surface 200. The upper end of the outdoor facing surface 20 and the upper end of the indoor facing surface 21 are at approximately the same height, and the lower end of the indoor facing surface 21 extends downward beyond the lower end of the outdoor facing surface 20 (including the lower outdoor facing surface 202).

As shown in FIG. 8, the upper surface 22 of the top panel 2 is composed of a horizontal upper surface 220 and a number of recesses 221 formed at intervals in the width direction of the panel, and each recess 221 is formed in a U-shape in front view by opposing vertical surfaces 222, 222 and a bottom surface 223. The bottom surface 223 of the recess 221 is formed from a thick pressure plate.

The lower surface portion 23 of the top panel 2, in a side view, is formed of an outdoor lower surface 230, an outdoor inclined surface 231 extending from the indoor side portion of the outdoor lower surface 230 toward the indoor side and upward, a central horizontal plane 232 extending horizontally from the indoor side portion of the outdoor inclined surface 231 toward the indoor side, an indoor side inclined surface 233 extending from the indoor side portion of the central horizontal plane 232 toward the indoor side and downward, an indoor side vertical surface 234 hanging down from the indoor side portion of the indoor side inclined surface 233, and an indoor side lower surface 235 extending horizontally toward the indoor side from the lower end of the indoor side vertical surface 234.

As shown in FIG. 10, a cushioning/airtight member 15 is provided on the underside 23 of the top panel 2, but the configuration of the bottom end portion of the top panel 2 (including the lower outdoor facing surface 202, the bottom portion 23, and the cushioning/airtight member 15) is substantially the same as the configuration of the bottom end portion of the panel 3, and for details of the configuration of the bottom end portion of the top panel 2, please refer to the configuration of the bottom end portion of the panel 3 described below.

[C-1-2] Surface material of the top panel The top panel 2 is assembled from multiple steel plates formed into a predetermined shape. In this embodiment, the main surface 200 of the outdoor facing surface 20 of the top panel 2 is formed from a first surface material, and a folded piece is integrally formed at the upper end and the lower end of the first surface material, with the folded piece at the upper end forming the outdoor end of the upper surface portion 22 and the folded piece at the lower end forming the lower edge portion 201.

The indoor facing surface 21 of the top panel 2 is formed from a second surface material, and folded pieces are integrally formed at the upper and lower ends of the second surface material, with the folded piece at the upper end forming the upper surface 220 of the upper surface portion 22 and the folded piece at the lower end forming the indoor facing lower surface 235 of the lower surface portion 23.

The lower outdoor facing surface 202 of the outdoor facing surface 20 and the outdoor side portion of the underside portion 23 are made of a third surface material folded into a predetermined shape, and the indoor side portion of the underside portion 23 is made of a fourth surface material folded into a predetermined shape, with the third surface material and the fourth surface material overlapping to form a central horizontal plane 232, and the fourth surface material and the folded piece at the bottom end of the second surface material overlapping to form the indoor side underside surface 235.

The side portion 24 is formed from a surface portion having a shape that follows the cross-sectional shape of the top panel 2 and a fifth surface material consisting of a pair of facing pieces, which are connected (welded) to the inner surfaces of the outdoor facing surface 20 and the indoor facing surface 21, respectively. The upper end of the fifth surface material forming the side portion 24 abuts against the upper surface 200 of the upper surface portion 22, and the lower end abuts at least partially against the lower surface portion 23. A hole portion 240 is formed in the side portion 24 so as to span the horizontal surface 250 of the intermediate horizontal reinforcement member 25, and a gap 241 and an opening 242 are formed in the lower portion as drainage openings (see FIG. 10A).

Each vertical surface 222 of the recess 221 on the upper surface 22 of the top panel 2 is made of a projection piece that forms the vertical surface 222 and a sixth surface material that is L-shaped in cross section from the indoor facing piece, with the outdoor edge of the projection piece abutting the inner surface of the outdoor facing surface 20, and the indoor facing piece abutting and connecting (welded) to the inner surface of the indoor facing surface 21. As described above, the bottom surface 223 of the recess 221 is formed from a thick pressing plate.

The first to sixth surface materials are formed into a predetermined shape, but these are merely examples, and the shape, number, assembly structure, etc. of the surface materials (plate materials) that form the surface of the top panel 2 are not limited.

[C-1-3] Horizontal reinforcement material of top panel A plurality of horizontal reinforcement materials extending across the entire width are provided inside the top panel 2. Note that a plurality of horizontal reinforcement materials shorter than the entire width of the top panel 2 may be connected in the opening width direction. As shown in Figures 8 and 10, in this embodiment, the top panel 2 has three horizontal reinforcement materials: an upper horizontal reinforcement material 25', a middle horizontal reinforcement material 25, and a lower horizontal reinforcement material 26.

The upper horizontal reinforcement 25' has a U-shape in cross section, consisting of a horizontal surface 250', an outdoor hanging piece 251', and an indoor hanging piece 252'. The horizontal surface 250' has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface 200 of the outdoor facing surface 20 and the inner surface of the second surface material forming the indoor facing surface 21, and the outdoor hanging piece 251' and the indoor hanging piece 252' are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively. Both ends of the upper horizontal reinforcement 25' in the length direction are connected (welded) to the facing piece of the fifth surface material forming the side surface portion 24. A pressing plate forming the bottom 223 of the recess 221 is supported on the horizontal surface 250' of the upper horizontal reinforcement 25'.

The intermediate horizontal reinforcement 25 has a U-shape in cross section, consisting of a horizontal surface 250, an outdoor hanging piece 251, and an indoor hanging piece 252. The U-shape may be formed from a rising piece instead of the outdoor hanging piece 251 and the indoor hanging piece 252. The horizontal surface 250 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 200 of the outdoor facing surface 20 and the second surface material forming the indoor facing surface 21, and the outdoor hanging piece 251 and the indoor hanging piece 252 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively. Both ends of the upper horizontal reinforcement 25 in the length direction are connected (welded) to the facing piece of the fifth surface material forming the side portion 24. The horizontal surface 250 of the intermediate horizontal reinforcement 25 has a plurality of drainage holes (not shown) spaced apart in the length direction (panel width direction).

In cross section, the lower horizontal reinforcement 26 has a U-shape consisting of a horizontal surface 260, an outdoor rising piece 261, and an indoor rising piece 262. The U-shape may be formed from a hanging piece instead of the outdoor rising piece 261 and the indoor rising piece 262. The horizontal surface 260 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 200 of the outdoor facing surface 20 and the second surface material forming the indoor facing surface 21, and the outdoor rising piece 261 and the indoor rising piece 262 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively. The corner portion consisting of the outdoor portion of the horizontal surface 260 and the outdoor rising piece 261 is connected to the inner surface of the corner at the lower end of the first surface material (see FIG. 10). Both ends of the lower horizontal reinforcement 26 in the length direction are connected (welded) to the facing piece of the fifth surface material forming the side surface portion 24. The horizontal surface 260 of the lower horizontal reinforcement 26 has multiple drainage holes (not shown) spaced apart in the length direction (panel width direction).

[C-1-4] Vertical reinforcement of top panel In the internal space of the top panel 2, vertical reinforcement is provided in such a manner as to transmit the vertical force downward against the vertical force acting on the top panel 2. In this embodiment, a first vertical reinforcement 27 is provided between the upper horizontal reinforcement 25' and the intermediate horizontal reinforcement 25 of the top panel 2, located directly below the bottom surface 223 of the recess 221 of the upper surface portion 22 of the top panel 2, a second vertical reinforcement 28 is provided between the intermediate horizontal reinforcement 25 and the lower horizontal reinforcement 26, located directly below the first vertical reinforcement 27, and a third vertical reinforcement 29 is provided between the lower horizontal reinforcement 26 and the third and fourth surface materials forming the lower end portion, located directly below the second vertical reinforcement 28.

The first vertical reinforcement 27 is provided in such a way that it resists the vertical force acting on the top panel 2 and transmits the vertical force downward. The first vertical reinforcement 27 has a height dimension in which its upper end abuts the horizontal surface 250' of the upper horizontal reinforcement 25' and its lower end abuts the horizontal surface 250 of the middle horizontal reinforcement 25, and also has a projected dimension in which it abuts the inner surfaces of the first surface material (main surface 200 of the exterior facing surface 20) and the second surface material (indoor facing surface 21).

More specifically, as shown in FIG. 9, the first vertical reinforcement member 27 of this embodiment has a hat-shaped cross-sectional shape consisting of an outdoor facing surface 270, a pair of visible surfaces 271 extending from both ends of the width direction (visible direction) of the outdoor facing surface 270 toward the indoor side, and a pair of indoor facing pieces 272 extending in the visible direction so as to be spaced apart from each other from the indoor side tips of the pair of visible surfaces 271, and the outdoor facing surface 270, the pair of visible surfaces 271, and the pair of indoor facing pieces 272 extend vertically in the height direction of the top panel 2.

The projection surface 271 of the first vertical reinforcement 27 has a projection dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 200 of the outdoor facing surface 20 and the inner surface of the second surface material forming the indoor facing surface 21, and the outdoor facing surface 270 of the first vertical reinforcement 27 abuts the inner surface of the outdoor facing surface 20, and the indoor facing piece 272 abuts the inner surface of the indoor facing surface 21 and is connected (welded). The upper edge of the first vertical reinforcement 27 (at least a pair of projection surfaces 271) is a horizontal edge and abuts the lower surface of the horizontal surface 250' of the upper horizontal reinforcement 25'. The lower edge of the first vertical reinforcement 27 (at least a pair of projection surfaces 271) is a horizontal edge and abuts the upper surface of the horizontal surface 250 of the intermediate horizontal reinforcement 25. A hole 2710 is formed in the lower part of the projection surface 271.

The second vertical reinforcement 28 is provided in such a manner that it resists the vertical force acting on the top panel 2 and transmits the vertical force downward. The second vertical reinforcement 28 has a height dimension in which its upper end abuts the horizontal surface 250 of the middle horizontal reinforcement 25 and its lower end abuts the horizontal surface 260 of the lower horizontal reinforcement 26, and also has a projection dimension in which it abuts the inner surfaces of the first surface material (main surface 200 of the exterior facing surface 20) and the second surface material (indoor facing surface 21).

The second vertical reinforcement 28, like the first vertical reinforcement 27 (see Figure 9), has a hat-shaped cross-sectional shape consisting of an outdoor facing surface 280, a pair of visible surfaces 281 extending from both ends of the width direction (visible direction) of the outdoor facing surface toward the indoor side, and a pair of indoor facing pieces 282 extending in the visible direction so as to be spaced apart from each other from the indoor side tips of the pair of visible surfaces 281, and the outdoor facing surface 280, the pair of visible surfaces 281, and the pair of indoor facing pieces 282 extend vertically in the height direction of the top panel 2.

The projection surface 281 of the second vertical reinforcement 28 has a projection dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 200 of the outdoor facing surface 20 and the second surface material forming the indoor facing surface 21, and the outdoor facing surface 280 of the second vertical reinforcement 28 abuts the inner surface of the outdoor facing surface 20, and the indoor facing piece 282 abuts the inner surface of the indoor facing surface 21 and is connected (welded). The upper edge of the second vertical reinforcement 28 (at least a pair of projection surfaces 281) is a horizontal edge and abuts the lower surface of the horizontal surface 250 of the intermediate horizontal reinforcement 25. The lower edge of the second vertical reinforcement 28 (at least a pair of projection surfaces 281) is a horizontal edge and abuts the upper surface of the horizontal surface 260 of the lower horizontal reinforcement 26. Two holes 2810 are formed in the projection surface 281 with a gap between them.

The third vertical reinforcement 29 is provided in such a manner that it resists the vertical force acting on the top panel 2 and transmits the vertical force downward. The third vertical reinforcement 29 has a height dimension in which its upper end abuts the horizontal surface 260 of the lower horizontal reinforcement 26 and its lower end abuts the portions (including at least the horizontal surface) of the third and fourth surface materials that form the lower end portion, and also has a projected dimension in which it abuts the outdoor vertical portion of the third surface material (lower outdoor facing surface 202) and the second surface material (indoor facing surface 21).

The third vertical reinforcement 29, like the first vertical reinforcement 27 (see Figure 9) and the second vertical reinforcement 28, has a hat-shaped cross-sectional shape consisting of an outdoor facing surface 290, a pair of visible surfaces 291 extending from both ends of the width direction (visible direction) of the outdoor facing surface 290 toward the indoor side, and a pair of indoor facing pieces 292 extending in the visible direction so as to be spaced apart from each other from the indoor side tips of the pair of visible surfaces 291, and the outdoor facing surface 290, the pair of visible surfaces 291, and the pair of indoor facing pieces 292 extend vertically in the height direction of the top panel 2.

The projected surface 291 of the third vertical reinforcement 29 has a projected dimension equivalent to the dimension between the part of the third surface material forming the lower outdoor facing surface 202 and the inner surface of the second surface material forming the indoor facing surface 21, and the third vertical reinforcement 29 is connected (welded) such that the outdoor facing surface 290 abuts the inner surface of the third surface material forming the lower outdoor facing surface 202 and the indoor facing piece 292 abuts the inner surface of the second surface material forming the indoor facing surface 21. The upper edge of the third vertical reinforcement 29 (at least one pair of projected surfaces 291) is a horizontal edge and abuts the underside of the horizontal surface 260 of the lower horizontal reinforcement 26. The lower edge of the third vertical reinforcement 29 (at least one pair of projected surfaces 291) is partially in contact with the fourth surface material that forms the central horizontal plane 232, the indoor side vertical surface 234, and the indoor side lower surface 235, and more specifically, it has a horizontal edge 293 that abuts the central horizontal plane 232, a vertical edge that abuts the lower end portion of the indoor side vertical surface 234, and a horizontal edge 294 that abuts the indoor side lower surface 235. An opening 2910 is formed below the horizontal edge 293 of the third vertical reinforcement 29.

[C-2] Middle panel
[C-2-1] The configuration of the panel 3 will be described with reference to the outline drawings 11 to 15 of the intermediate panel. The panel 3 is a roughly horizontally rectangular plate-like body with a predetermined width, height, and thickness (projected dimensions) extending in the opening width direction, and is composed of an outdoor facing surface 30, an indoor facing surface 31, an upper surface portion 32, a lower surface portion 33, and side surfaces 34 on both ends in the width direction.

The lower end of the outdoor facing surface 30 is formed as a step recessed towards the indoor facing surface 31. Specifically, the outdoor facing surface 30 is made up of a main surface 300 and a step formed below the main surface 300, and the step is formed from a lower edge 301 at the bottom end of the main surface 300 and a lower outdoor facing surface (step facing surface) 302 that is displaced and hangs down towards the indoor facing surface 31 relative to the vertically oriented main surface 300.

The upper surface 32 of the panel 3 is formed from a horizontal outdoor upper surface 320, an outdoor inclined surface 321 extending from the indoor side portion of the outdoor upper surface 320 toward the indoor side and upward, a central horizontal plane 322 extending horizontally from the indoor side portion of the outdoor inclined surface 321 toward the indoor side, an indoor inclined surface 323 extending from the indoor side portion of the central horizontal plane 322 toward the indoor side and downward, an indoor side vertical surface 324 hanging down from the indoor side portion of the indoor side inclined surface 323, and an indoor side lower surface 325 extending horizontally toward the indoor side from the lower end of the indoor side vertical surface 324. The outdoor inclined surface 321, the central horizontal plane 322, and the indoor side inclined surface 323 form a trapezoidal portion in side view.

The outdoor side portion of the upper surface portion 32 is provided with an outdoor side rising piece 303 that rises vertically and is flush with the main surface portion 300 of the outdoor side visible surface 30, and the indoor side portion of the upper surface portion 32 is provided with an indoor side rising piece 310 that rises vertically and is flush with the indoor side visible surface 31. The upper end portion of the panel 3 consists of the upper surface portion 32, the outdoor side rising piece 303, and the indoor side rising piece 310. As shown in FIG. 11, the width dimension of the outdoor side rising piece 303 of the panel 3 is smaller than the width dimension of the intermediate panel 3, and the panel width direction edge 3030 of the outdoor side rising piece 303 is located inside the side surface portion 34 of the panel 3.

The lower surface 33 of the panel 3 is formed, in a side view, from an outdoor lower surface 330, an outdoor inclined surface 331 extending from the indoor side portion of the outdoor lower surface 330 toward the indoor side and upward, a central horizontal plane 332 extending horizontally from the indoor side portion of the outdoor inclined surface 331 toward the indoor side, an indoor inclined surface 333 extending from the indoor side portion of the central horizontal plane 332 toward the indoor side and downward, an indoor side vertical surface 334 hanging down from the indoor side portion of the indoor side inclined surface 333, and an indoor side lower surface 335 extending horizontally toward the indoor side from the lower end of the indoor side vertical surface 334. The outdoor inclined surface 331, the central horizontal plane 332, and the indoor side inclined surface 333 form a trapezoidal portion in a side view.

The upper end portion of the panel 3 includes an upper surface portion 32, an outdoor side rising piece 303 that rises vertically and is flush with the main surface portion 300 of the outdoor side facing surface 30, and an indoor side rising piece 310 that rises vertically and is flush with the indoor side facing surface 31. In the indoor side portion of the upper end portion of the panel 3, a groove is formed extending in the panel width direction from the indoor side vertical surface 324, the indoor side lower surface 325, and the indoor side rising piece 310, and an elastic water stop member 16 is fitted into the groove. The configuration of the elastic water stop member 16 will be described in detail later. In this embodiment, the elastic water stop member 16 is provided at the upper end portion of the panel 3, but the elastic water stop member may be provided at the lower end portion of the panel 3 or at both the upper end portion and the lower end portion, so that the elastic water stop member is sandwiched between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 when the opening is fully closed.

The lower end portion of the panel 3 is composed of the lower end portion of the outdoor facing surface 30 (a step portion composed of the lower edge portion 301 and the lower outdoor facing surface 302) and the lower surface portion 33. As shown in FIG. 14, a buffer/airtight member 15 extending in the opening width direction is provided on the central horizontal surface 332 of the lower surface portion 33. The buffer/airtight member 15 has a dimension shorter than the overall width of the panel, and the lengthwise edge of the buffer/airtight member 15 approximately coincides with the panel widthwise edge 3030 of the outdoor rising piece 303. The buffer/airtight member 15 according to this embodiment is formed of a first layer 150 made of a flame-retardant rubber with high hardness (made of chloroprene rubber, etc., and mainly functions as a buffer material) and a second layer 151 made of a flame-retardant foam with low hardness (made of EPDM foam, etc., and mainly functions as an airtight material), but the material is not limited. In this embodiment, a two-layered cushioning and airtight member 15 is shown, but this is not limiting, and a one-layered cushioning and airtight member 15 may be formed from one member. In this embodiment, the cushioning and airtight member 15 is provided at the lower end of the panel 3, but the cushioning and airtight member may be provided at the upper end or at both the upper and lower end of the panel 3, so that when the opening is in a fully closed position, the cushioning and airtight member is sandwiched between the lower end of the upper panel 3 and the upper end of the lower panel 3.

14 and 15, the end room outer airtight member 17 is provided at both ends of the lower outdoor facing surface 302 of the panel 3 in the panel width direction. The end room outer airtight member 17 is a member having a rectangular shape when viewed from the front, and has a height dimension equivalent to the total height of the lower outdoor facing surface 302 of the panel 3 (in the illustrated embodiment, it is slightly larger than the total height of the lower outdoor facing surface 302), and a visible dimension approximately equivalent to the distance between the side portion 34 of the panel 3 and the panel width direction edge 3030 of the outdoor side rising piece 303. The thickness of the end room outer airtight member 17 is larger than the visible dimension of the lower end edge portion 301 of the lower end of the main surface portion 300 of the outdoor facing surface 30, and when attached to both ends of the lower outdoor facing surface 302 in the panel width direction, the outer surface of the end room outer airtight member 17 is located slightly outdoors than the main surface portion 300. The end room outer airtight member 17 in this embodiment is made of a flame-retardant rubber sponge (such as chloroprene rubber), but the material is not limited. In this embodiment, the end room outer airtight member 17 is provided at both ends in the panel width direction at the lower end of the panel 3, but depending on the shape of the outdoor facing surface 30 of the panel 3, the end room outer airtight member may be provided at the upper end.

As shown in Figures 14 and 15, the end lower airtight member 18 is provided to connect the end room outer airtight member 17 and the buffer/airtight member 15. The end lower airtight member 18 extends along the outdoor lower surface 330, the outdoor inclined surface 331, and the central horizontal surface 332 at both widthwise ends of the lower end of the panel 3. The lower end of the end room outer airtight member 17 extends downward beyond the outdoor lower surface 330, and a part of the outdoor side portion of the end lower airtight member 18 is in close contact with the inner surface of the lower end of the end room outer airtight member 17. The end lower airtight member 18 according to this embodiment is formed from a first layer 180 made of a flame-retardant rubber sponge (such as chloroprene rubber) with high hardness and a second layer 181 made of a flame-retardant foam (such as EPDM foam, which mainly functions as an airtight material) with low hardness, but the material is not limited. In this embodiment, the lower end airtight member 18 has a two-layer structure, but the present invention is not limited to this, and the lower end airtight member 18 may be formed from one member. As shown in FIG. 14, an airtight member is provided over the entire width of the panel, including the cushioning/airtight member 15, the left and right lower end airtight members 18 that are in close contact with both ends of the cushioning/airtight member 15 in the length direction, and the left and right end room outside airtight members 17 that are in close contact with the outdoor side portions of the left and right lower end airtight members 18. The description of the configuration of the lower end portion of the panel 3 can be applied to the configuration of the lower end portion of the top panel 2 (FIG. 10A). In this embodiment, the lower end airtight member 18 is provided at the lower end portion of the panel 3, but the lower end airtight member may be provided at the upper end portion of the panel 3, or at both the upper end portion and the lower end portion, so that the lower end airtight member is sandwiched between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 when the opening is in a fully closed position.

[C-2-2] The surface material panel 3 of the intermediate panel is assembled from a plurality of steel plates formed into a predetermined shape. In this embodiment, the main surface portion 300 of the outdoor facing surface 30 of the panel 3 is formed from a first surface material, and a folded piece is integrally formed at the upper end and the lower end of the first surface material, with the folded piece at the upper end forming the outdoor facing horizontal surface 320 of the upper surface portion 32, and the folded piece at the lower end forming the lower edge portion 301. The indoor facing surface 31 of the panel 3 is formed from a second surface material, and the upper end portion of the second surface material forms the indoor facing rising piece 310, and a folded piece is integrally formed at the lower end, with the folded piece at the lower end forming the indoor facing lower surface 335 of the lower surface portion 33.

The outdoor side of the upper surface 32 is made of a third surface material bent into a specified shape, and the indoor side of the upper surface 32 is made of a fourth surface material bent into a specified shape, with the third and fourth surface materials overlapping to form a central horizontal plane 322. The outdoor side rising piece 303 is made of a plate material that is L-shaped when viewed from the side.

The lower outdoor facing surface 301 of the outdoor facing surface 30 and the outdoor portion of the underside 33 are made of a fifth surface material folded into a predetermined shape, and the indoor portion of the underside 33 is made of a sixth surface material folded into a predetermined shape, with the fifth surface material and the sixth surface material overlapping to form a central horizontal plane 332, and the sixth surface material and the folded piece at the lower end of the second surface material overlapping to form the indoor side underside 335. The sixth surface material forming the indoor side vertical surface 334 of the underside 33 has a plurality of drainage holes (not shown) spaced apart in the width direction of the panel, located at the lower end of the indoor side vertical surface 334. The drainage holes may be formed partially across the indoor side underside 335.

The side portion 34 is formed from a surface portion having a shape that follows the cross-sectional shape of the panel 3 and a seventh surface material consisting of a pair of facing pieces, and the pair of facing pieces are abutted and connected (welded) to the inner surfaces of the outdoor facing surface 30 and the indoor facing surface 31. The upper end of the seventh surface material that forms the side portion 34 abuts at least partially against the inner surfaces of the third and fourth surface materials that form the upper surface portion 32, and the lower end abuts at least partially against the fifth and sixth surface materials that form the lower surface portion 33. The side portion 34 has a hole portion 340 (see FIG. 15) formed so as to span the horizontal surface 350 of the intermediate horizontal reinforcement member 35. Furthermore, a gap 341 and an opening 342 are formed in the lower portion of the side portion 34 as water drainage openings.

The first to seventh surface materials formed into a predetermined shape have been described above, but these are merely examples, and the shape, number, assembly structure, etc. of the surface materials (plate materials) that form the surface of panel 3 are not limited.

[C-2-3] Horizontal reinforcement material of middle panel A plurality of horizontal reinforcement materials extending across the entire width are provided inside the panel 3. Note that a plurality of horizontal reinforcement materials shorter than the entire width of the panel 3 may be connected in the opening width direction. As shown in Figures 11 and 13, in this embodiment, the panel 3 is provided with two horizontal reinforcement materials, a middle horizontal reinforcement material 35 and a lower horizontal reinforcement material 36.

In cross section, the intermediate horizontal reinforcement 35 has a U-shape formed by a horizontal surface 350, an outdoor side hanging piece 351, and an indoor side hanging piece 352. The U-shape may be formed from a rising piece and a hanging piece instead of the outdoor side hanging piece 351 and the indoor side hanging piece 352. The horizontal surface 350 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 300 of the outdoor side facing surface 30 and the second surface material forming the indoor side facing surface 31, and the outdoor side hanging piece 351 and the indoor side hanging piece 352 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively. Both ends in the length direction of the intermediate horizontal reinforcement 35 are connected (welded) to the facing piece of the seventh surface material forming the side portion 34. The horizontal surface 350 of the intermediate horizontal reinforcement 35 has a plurality of drainage holes (not shown) at intervals in the length direction (panel width direction).

The lower horizontal reinforcement 36 has a U-shape in cross section, consisting of a horizontal surface 360, an outdoor rising piece 361, and an indoor rising piece 362. The U-shape may be formed from a hanging piece instead of the outdoor rising piece 361 and the indoor rising piece 362. The horizontal surface 360 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 300 of the outdoor facing surface 30 and the second surface material forming the indoor facing surface 31, and the outdoor rising piece 361 and the indoor rising piece 362 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively. The corner portion consisting of the outdoor portion of the horizontal surface 360 and the outdoor rising piece 361 is connected to the inner surface of the corner at the lower end of the first surface material (see FIG. 13). Both ends of the lower horizontal reinforcement in the length direction are connected (welded) to the facing piece of the seventh surface material forming the side surface portion 34. The horizontal surface 360 of the lower horizontal reinforcement 36 has multiple drainage holes (not shown) spaced apart in the length direction (panel width direction).

[C-2-4] Vertical reinforcement of intermediate panel In the internal space of panel 3, vertical reinforcement is provided in such a manner that it resists the vertical force acting on panel 3 and transmits the vertical force downward. In this embodiment, between the third and fourth surface materials forming the upper surface portion 32 of panel 3 and the intermediate horizontal reinforcement 35, a first vertical reinforcement 37 is provided immediately below the vertical reinforcement of the panel directly above (the third vertical reinforcement 29 to 39 of the top panel 2 to panel 3) when the shutter curtain 1 is in the fully closed position, between the intermediate horizontal reinforcement 35 and the lower horizontal reinforcement 36, a second vertical reinforcement 38 is provided immediately below the first vertical reinforcement 37, and between the lower horizontal reinforcement 36 and the fifth and sixth surface materials forming the lower surface portion 33, a third vertical reinforcement 39 is provided immediately below the second vertical reinforcement 38.

The first vertical reinforcement 37 is provided in such a manner that it resists the vertical force acting on the panel 3 and transmits the vertical force downward. The first vertical reinforcement 37 has a height dimension such that its upper end partially abuts the third and fourth surface materials that form the upper surface portion 32, and its lower end abuts the horizontal surface 350 of the intermediate horizontal reinforcement 35, and also has a projected dimension that abuts the inner surface of the first surface material (main surface portion 300 of the outdoor facing surface 30) and the second surface material (indoor facing surface 31).

More specifically, as shown in FIG. 12, the first vertical reinforcement member 37 of this embodiment has a hat-shaped cross-sectional shape consisting of an outdoor facing surface 370, a pair of visible surfaces 371 extending from both ends of the width direction (visible direction) of the outdoor facing surface 370 toward the indoor side, and a pair of indoor facing pieces 372 extending in the visible direction so as to be spaced apart from each other from the indoor side tips of the pair of visible surfaces 371, and the outdoor facing surface 370, the pair of visible surfaces 371, and the pair of indoor facing pieces 372 extend vertically in the height direction of the panel 3.

The projected surface 371 of the first vertical reinforcement 37 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface 300 of the outdoor facing surface 30 and the second surface material forming the indoor facing surface 31, and the first vertical reinforcement 37 is connected (welded) such that the outdoor facing surface 370 abuts the inner surface of the outdoor facing surface 30 and the indoor facing piece 372 abuts the inner surface of the indoor facing surface 31.

The upper edge of the first vertical reinforcement 37 (at least a pair of projected surfaces 371) is shaped to conform to the third and fourth surface materials that form the upper surface portion 32, and is in partial contact (at least the horizontal portion) with the lower surfaces of the third and fourth surface materials that form the upper surface portion 32. The lower edge of the first vertical reinforcement 37 (at least a pair of projected surfaces 371) is a horizontal edge that is in contact with the upper surface of the horizontal surface 350 of the intermediate horizontal reinforcement 35. A hole 3710 is formed in the lower portion of the projected surface 371.

The second vertical reinforcement 38 is provided in such a manner that it resists the vertical force acting on the panel 3 and transmits the vertical force downward. The second vertical reinforcement 38 has a height dimension in which its upper end abuts the horizontal surface 350 of the middle horizontal reinforcement 35 and its lower end abuts the horizontal surface 360 of the lower horizontal reinforcement 36, and also has a projection dimension in which it abuts the first surface material (main surface 300 of the exterior facing surface 30) and the second surface material (indoor facing surface 31).

The second vertical reinforcement 38, like the first vertical reinforcement 37 (see Figure 12), has a hat-shaped cross-sectional shape consisting of an outdoor facing surface 380, a pair of visible surfaces 381 extending from both ends of the width direction (visible direction) of the outdoor facing surface toward the indoor side, and a pair of indoor facing pieces 382 extending in the visible direction so as to be spaced apart from each other from the indoor side tips of the pair of visible surfaces 381, and the outdoor facing surface 380, the pair of visible surfaces 381, and the pair of indoor facing pieces 382 extend vertically in the height direction of the panel 3.

The projected surface 381 of the second vertical reinforcement 38 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface 300 of the outdoor facing surface 30 and the second surface material forming the indoor facing surface 31, and the outdoor facing surface 380 of the second vertical reinforcement 38 abuts against the inner surface of the outdoor facing surface 30, and the indoor facing piece 382 abuts against the inner surface of the indoor facing surface 31, and is connected (welded).

The upper edge of the second vertical reinforcement 38 (at least a pair of projected surfaces 381) is a horizontal edge and abuts against the underside of the face portion 350 of the intermediate horizontal reinforcement 35. The lower edge of the second vertical reinforcement 38 (at least a pair of projected surfaces 381) is a horizontal edge and abuts against the upper surface of the horizontal surface 360 of the lower horizontal reinforcement 36. Two holes 3810 are formed in the projected surfaces 381 at a distance above and below.

The third vertical reinforcement 39 is provided in such a manner that it resists the vertical force acting on the panel 3 and transmits the vertical force downward. The third vertical reinforcement 39 has a height dimension in which its upper end abuts the horizontal surface 360 of the lower horizontal reinforcement 36 and its lower end abuts the portions (including at least the horizontal surface) of the fifth and sixth surface materials that form the lower end portion, and also has a projected dimension in which it abuts the outdoor vertical portion of the fifth surface material (lower outdoor facing surface 302) and the second surface material (indoor facing surface 31).

The third vertical reinforcement 39, like the first vertical reinforcement 37 (see Figure 12) and the second vertical reinforcement 38, has a hat-shaped cross-sectional shape consisting of an outdoor facing surface 390, a pair of visible surfaces 391 extending from both ends of the width direction (visible direction) of the outdoor facing surface 390 toward the indoor side, and a pair of indoor facing pieces 392 extending in the visible direction so as to be spaced apart from each other from the indoor side tips of the pair of visible surfaces 391, and the outdoor facing surface 390, the pair of visible surfaces 391, and the pair of indoor facing pieces 392 extend vertically along the height direction of the panel 3.

The projected surface 391 of the third vertical reinforcement 39 has a projected dimension equivalent to the dimension between the portion of the fifth surface material that forms the lower outdoor facing surface 302 and the inner surface of the second surface material that forms the indoor facing surface 31, and the third vertical reinforcement 39 is connected (welded) such that the outdoor facing surface 390 abuts the inner surface of the fifth surface material that forms the lower outdoor facing surface 302, and the indoor facing piece 392 abuts the inner surface of the second surface material that forms the indoor facing surface 31.

The upper edge of the third vertical reinforcement 39 (at least one pair of projected surfaces 391) is a horizontal edge and abuts the lower surface of the horizontal surface 350 of the intermediate horizontal reinforcement 35. The lower edge of the third vertical reinforcement 39 (at least one pair of projected surfaces 391) partially abuts the sixth surface material forming the central horizontal surface 332, the indoor side vertical surface 334, and the indoor side lower surface 335, and more specifically, has a horizontal edge 393 abutting the central horizontal surface 332, a vertical edge abutting the lower end portion of the indoor side vertical surface 334, and a horizontal edge 394 abutting the indoor side lower surface 335. An opening 3910 is formed below the horizontal edge 393 of the third vertical reinforcement 39.

[C-3] Bottom panel
[C-3-1] The configuration of the bottom panel 4 according to this embodiment will be described with reference to the outline diagrams 16 to 18 of the bottom panel (panel body). The bottom panel 4 is composed of a bottom panel body 4' and a movable seat plate 6 provided at the lower end of the bottom panel body 4'. The bottom panel body 4' is a plate-like body in a roughly horizontally rectangular shape with a predetermined width, a predetermined height, and a predetermined thickness (projected dimensions) extending in the opening width direction, and is composed of an outdoor facing surface 40, an indoor facing surface 41, an upper surface portion 42, a lower surface portion 43 (outdoor lower surface 430, indoor lower surface 31), and side portions 44 at both ends in the width direction. As shown in FIG. 16, the width dimension (projected dimensions) of the movable seat plate 6 is the same as the width dimension (projected dimensions) of the bottom panel body 4', and the projected dimensions of the movable seat plate 6 are the same as the projected dimensions of the bottom panel body 4'.

The upper surface 42 of the panel body 4' of the bottom panel 4 is formed from a horizontal outdoor upper surface 420, an outdoor inclined surface 421 extending from the indoor side portion of the outdoor upper surface 420 toward the indoor side and upward, a central horizontal plane 422 extending horizontally from the indoor side portion of the outdoor inclined surface 421 toward the indoor side, an indoor inclined surface 423 extending from the indoor side portion of the central horizontal plane 422 toward the indoor side and downward, an indoor side vertical surface 424 hanging down from the indoor side portion of the indoor side inclined surface 423, and an indoor side lower surface 425 extending horizontally toward the indoor side from the lower end of the indoor side vertical surface 424.

The outdoor side portion of the upper surface portion 42 is provided with an outdoor side rising piece 400 that rises vertically and is flush with the outdoor side facing surface 40, and the indoor side portion of the upper surface portion 42 is provided with an indoor side rising piece 410 that rises vertically and is flush with the indoor side facing surface 41. The upper end portion of the panel body 4' consists of the upper surface portion 42, the outdoor side rising piece 400, and the indoor side rising piece 410. As shown in FIG. 16, the width dimension of the outdoor side rising piece 400 of the panel body 4' is smaller than the width dimension of the panel body 4', and the panel width direction edge 4000 of the outdoor side rising piece 400 is located inside the side portion 44 of the panel body 4'. The configuration of the upper end portion of the panel body 4' is substantially the same as the configuration of the upper end portion of the panel 3, and the top view of the bottom panel body 4' can be seen in the top view of the panel 3 shown in FIG. 11.

The lower end portion of the panel body 4' consists of an outdoor side lower surface 430, an indoor side lower surface 431, and an opening formed between the indoor side end of the outdoor side horizontal lower surface 430 and the outdoor side end of the indoor side lower surface 431, and a movable seat plate 6 is provided at the lower end portion of the panel body 4' so that it can move up and down.

[C-3-2] Surface material of bottom panel (panel body) The body 4' of the bottom panel 4 is assembled from a number of steel plates formed into a predetermined shape. In this embodiment, the exterior facing surface 40 of the body 4' is formed from a first surface material, and a folded piece is integrally formed at the upper and lower ends of the first surface material, with the folded piece at the upper end forming the exterior upper surface 420 of the upper surface portion 42, and the folded piece at the lower end forming the exterior lower surface 430 as an outdoor horizontal piece. The interior facing surface 41 of the panel body 4' is formed from a second surface material, and the upper end portion of the second surface material forms the indoor rising piece 410, and the folded piece at the lower end forms the indoor lower surface 431 as an indoor horizontal piece.

The outdoor side of the upper surface 42 is made of a third surface material bent into a predetermined shape, and the indoor side of the upper surface 42 is made of a fourth surface material bent into a predetermined shape, with the third and fourth surface materials overlapping to form a central horizontal plane 422. The outdoor side rising piece 400 is made of a plate material that is L-shaped when viewed from the side.

The side portion 44 is formed from a surface portion having a shape that follows the cross-sectional shape of the panel main body 4' and a fifth surface material consisting of a pair of facing pieces, and the pair of facing pieces are abutted and connected (welded) to the inner surfaces of the outdoor facing surface 40 and the indoor facing surface 41, respectively. As shown in FIG. 17A, the side portion 44 has a hole 440 formed so as to span the horizontal surface 450 of the intermediate horizontal reinforcement member 45. The lower portion of the side portion 44 has a gap 441, a hole 442, and a hole 443 formed so as to span the horizontal surface 460 of the lower horizontal reinforcement member 46. Although the first surface material to the fifth surface material formed into a predetermined shape have been described, these are merely examples, and the shape, number, assembly structure, etc. of the surface material (plate material) that forms the surface of the bottom panel main body 4' are not limited.

[C-3-3] Horizontal reinforcement material of bottom panel (panel body) Inside the panel body 4', multiple horizontal reinforcement materials are provided that extend across the entire width. Note that multiple horizontal reinforcement materials that are shorter than the entire width of the panel body 4' may be connected in the opening width direction. In this embodiment, the panel body 4' has two horizontal reinforcement materials, a middle horizontal reinforcement material 45 and a lower horizontal reinforcement material 46.

The intermediate horizontal reinforcement 45 has a U-shape in cross section, consisting of a horizontal surface 450, an outdoor hanging piece 451, and an indoor hanging piece 452. The U-shape may be formed from a rising piece instead of the outdoor hanging piece 451 and the indoor hanging piece 452. The horizontal surface 450 has a projected dimension equivalent to the dimension between the inner surfaces of the first surface material forming the outdoor facing surface 40 and the second surface material forming the indoor facing surface 41, and the outdoor hanging piece 451 and the indoor hanging piece 452 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively. Both ends of the intermediate horizontal reinforcement 45 in the length direction are connected (welded) to the facing piece of the fifth surface material forming the side portion 44. The horizontal surface 450 of the intermediate horizontal reinforcement 45 has a plurality of drainage holes (not shown) spaced apart in the length direction (panel width direction).

The lower horizontal reinforcement member 46 has a U-shape in cross section, consisting of a horizontal surface 460, an outdoor vertical surface 461 that hangs down from the outdoor end of the horizontal surface 460, and an indoor vertical surface 462 that hangs down from the indoor end of the horizontal surface 460. The horizontal surface 460 has a projected dimension equivalent to the dimension between the inner surfaces of the first surface material that forms the outdoor facing surface 40 and the second surface material that forms the indoor facing surface 41, and the outdoor vertical surface 461 and the indoor vertical surface 462 are connected (welded) to the inner surfaces of the outdoor facing surface 40 and the indoor facing surface 41 by abutting them. The lower end of the outdoor vertical surface 461 abuts against the base end side of the outdoor lower surface 430, which is the outdoor horizontal piece, and the lower end of the indoor vertical surface 462 abuts against the base end side of the indoor lower surface 431, which is the indoor horizontal piece. The height dimension of the lower horizontal reinforcement 46 is greater than the height dimension of the intermediate horizontal reinforcement 45, and multiple detection switches SW are provided across the width in the space surrounded by the lower horizontal reinforcement 46, the outdoor side lower surface 430, and the indoor side lower surface 431. The horizontal surface 460 of the lower horizontal reinforcement 46 serves as the mounting surface for the detection switches SW. Multiple drainage holes (not shown) are formed on the horizontal surface 460 of the lower horizontal reinforcement 46 at intervals in the length direction (panel width direction).

[C-3-4] Vertical reinforcement of bottom panel (panel body) In the internal space of the main body 4', vertical reinforcement is provided in such a manner that it resists the vertical force acting on the panel body 4' and transmits the vertical force downward. In this embodiment, a first vertical reinforcement 47 is provided between the third and fourth surface materials forming the upper surface portion 42 of the panel body 4' and the intermediate horizontal reinforcement 45, located immediately below the vertical reinforcement (third vertical reinforcement 39) of the panel 3 directly above when the shutter curtain 1 is in the fully closed position, and a second vertical reinforcement 48 is provided between the intermediate horizontal reinforcement 45 and the lower horizontal reinforcement 46, located immediately below the first vertical reinforcement 47.

The first vertical reinforcement 47 is provided in such a way that it resists the vertical force acting on the panel body 4' and transmits the vertical force downward. The first vertical reinforcement 47 has a height dimension such that its upper end partially abuts the third and fourth surface materials that form the upper surface portion 42, and its lower end abuts the horizontal surface 450 of the intermediate horizontal reinforcement 45, and also has a projected dimension that abuts the inner surfaces of the first surface material (outdoor facing surface 40) and the second surface material (indoor facing surface 41).

More specifically, the first vertical reinforcement member 47 in this embodiment has a hat-shaped cross-sectional shape consisting of an outdoor facing surface 470, a pair of visible surfaces 471 extending from both ends of the width direction (visible direction) of the outdoor facing surface 470 toward the indoor side, and a pair of indoor facing pieces 472 extending in the visible direction so as to be spaced apart from each other from the indoor side tips of the pair of visible surfaces 471, and the outdoor facing surface 470, the pair of visible surfaces 471, and the pair of indoor facing pieces 472 extend vertically in the height direction of the panel body 4'.

The projected surface 471 of the first vertical reinforcement 47 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the outdoor facing surface 40 and the second surface material forming the indoor facing surface 41, and the first vertical reinforcement 47 is connected (welded) such that the outdoor facing surface 470 abuts the inner surface of the outdoor facing surface 40 and the indoor facing piece 472 abuts the inner surface of the indoor facing surface 41.

The upper edge of the first vertical reinforcement 47 (at least a pair of projected surfaces 471) is shaped to conform to the third and fourth surface materials that form the upper surface 42, and is in partial contact (at least the horizontal portion) with the lower surfaces of the third and fourth surface materials that form the upper surface 42. The lower edge of the first vertical reinforcement 47 (at least a pair of projected surfaces 471) is a horizontal edge that is in contact with the upper surface of the horizontal surface 450 of the intermediate horizontal reinforcement 45. A hole 4710 is formed in the lower portion of the projected surface 471.

The second vertical reinforcement 48 is provided in such a way that it resists the vertical force acting on the panel body 4' and transmits the vertical force downward. The second vertical reinforcement 48 has a height dimension in which its upper end abuts the horizontal surface 450 of the middle horizontal reinforcement 45 and its lower end abuts the horizontal surface 460 of the lower horizontal reinforcement 46, and also has a projection dimension in which it abuts the first surface material (outdoor facing surface 40) and the second surface material (indoor facing surface 41).

The second vertical reinforcement 48, like the first vertical reinforcement 47, has a hat-shaped cross-sectional shape consisting of an outdoor facing surface 480, a pair of visible surfaces 481 extending from both ends of the width direction (visible direction) of the outdoor facing surface toward the indoor side, and a pair of indoor facing pieces 482 extending in the visible direction so as to be spaced apart from each other from the indoor side tips of the pair of visible surfaces 481, and the outdoor facing surface 480, the pair of visible surfaces 481, and the pair of indoor facing pieces 482 extend vertically in the height direction of the panel body 4'.

The projected surface 481 of the second vertical reinforcement 48 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the outdoor facing surface 40 and the second surface material forming the indoor facing surface 41, and the second vertical reinforcement 48 is connected (welded) such that the outdoor facing surface 480 abuts the inner surface of the outdoor facing surface 40 and the indoor facing piece 482 abuts the inner surface of the indoor facing surface 41.

The upper edge of the second vertical reinforcement 48 (at least a pair of projected surfaces 481) is a horizontal edge and abuts against the lower surface of the horizontal surface 450 of the intermediate horizontal reinforcement 45. The lower edge of the second vertical reinforcement 48 (at least a pair of projected surfaces 481) is a horizontal edge and abuts against the upper surface of the horizontal surface 460 of the lower horizontal reinforcement 46. In this embodiment, the lower edge of the second vertical reinforcement 48 is a horizontal edge in its entirety and abuts against the upper surface of the horizontal surface 460 of the lower horizontal reinforcement 46. Two holes 4810 are formed in the projected surface 481 with a gap between them above and below.

[C-3-5] Seat plate of bottom panel As shown in Fig. 16, the movable seat plate 6 according to this embodiment is a long member extending over the entire width of the panel body 4' of the bottom panel 4. As shown in Fig. 22, the movable seat plate 6 is composed of a bottom surface 60 extending in the opening width direction, an outdoor side rising piece (outdoor side facing piece) 61 rising from the outdoor side end of the bottom surface 60, an indoor side rising piece (indoor side facing piece) 62 rising from the indoor side end of the bottom surface 60, an outdoor side facing surface 63 located on the indoor side of the outdoor side rising piece 61 and rising from the bottom surface 60, an indoor side facing surface 64 located on the outdoor side of the indoor side rising piece 62 and rising from the bottom surface 60, an outdoor side locking piece 65 extending horizontally from the upper end of the outdoor side facing surface 63 to the outdoor side, and an indoor side locking piece 66 extending horizontally from the upper end of the indoor side facing surface 64 to the indoor side.

The dimension between the outdoor facing surface 63 and the indoor facing surface 64 of the movable seat plate 6 is slightly smaller than the width of the opening on the underside of the panel body 4', and the movable seat plate 6 is suspended from the lower end of the panel body 4' so as to be movable upward, with the outdoor side locking piece 65 locking to the outdoor side lower surface 430, which is the outdoor side horizontal piece of the panel body 4', and the indoor side locking piece 66 locking to the indoor side lower surface 431, which is the indoor side horizontal piece of the panel body 4'.

Located inside the lower end of the panel body 4' (the space surrounded by the lower horizontal reinforcement 46), multiple detection switches SW are attached at intervals in the width direction of the panel on the horizontal surface 460 of the lower horizontal reinforcement 46. When the shutter curtain 1 descends, the bottom surface of the movable seat plate 6 comes into contact with an obstacle or the floor surface, causing the movable seat plate 6 to move upward relative to the panel body 4' and turning on any of the detection switches SW, an obstacle detection signal is sent to the control unit via the cord reel CR.

The projected dimensions of the movable seat plate 6 are the same as those of the panel body 4', the outdoor facing surface 40 of the panel body 4' and the outdoor rising piece 61 of the movable seat plate 6 are flush, and the indoor facing surface 41 of the panel body 4' and the indoor rising piece 62 of the movable seat plate 6 are flush.

A groove is formed on the outdoor side of the movable seat plate 6, extending from the outdoor side of the bottom surface 60, the outdoor side rising piece 61, and the outdoor side facing surface 63 in the length direction of the movable seat plate 6 (width direction of the bottom panel 4), and an outdoor side elastic water-stopping member 16α is fitted into the groove. As described later, the outdoor side elastic water-stopping member 16α also functions as an airtight member.

A groove is formed in the indoor side portion of the movable seat plate 6, extending from the indoor side portion of the bottom surface 60, the indoor side rising piece 62, and the indoor side visible surface 64 in the length direction of the movable seat plate 6 (width direction of the bottom panel 4), and an indoor side elastic water-stopping member 16β is fitted into the groove. The configuration of the indoor side elastic water-stopping member 16β provided on the movable seat plate 6 is the same as that of the elastic water-stopping member 16 provided on the panel 3, except for slight differences in size and shape, and each part is given the same reference number (Figures 26 and 27), and the explanation of the elastic water-stopping member 16 can be used. In addition, the configurations of the indoor side elastic water-stopping member 16β and the outdoor side elastic water-stopping member 16α are substantially the same. In this embodiment, the outdoor elastic water stop member 16α and the indoor elastic water stop member 16β are provided on the movable seat plate 6, but the outdoor elastic water stop member and the indoor elastic water stop member may be provided on the underside 43 (outdoor underside 430, indoor underside 31) of the bottom panel main body 4', or on both the movable seat plate 6 and the underside 43, so that when the opening is in a fully closed position, the outdoor elastic water stop member and the indoor elastic water stop member are sandwiched between the movable seat plate 6 and the underside 43 of the bottom panel main body 4'.

An elastic water-stopping member 19 is provided along the entire width of the underside of the bottom surface 60 of the movable seat plate 6, which comes into contact with the floor surface FL when the seat is landed on the floor and is pressed against the floor surface FL when vertically compressed.

[C-4] Configuration of fitting between adjacent panels in the shutter curtain In the shutter curtain 1 in the fully closed position, the lower end portion of the top panel 2 and the upper end portion of the panel 3, the lower end portion of the panel 3 and the upper end portion of the panel 3, and the lower end portion of the panel 3 and the upper end portion of the bottom panel 4 are fitted together. In this embodiment, in the vertically adjacent panels, the lower end portion or lower portion of the upper panel is generally concave, and the upper end portion or upper portion of the lower panel is generally convex, so that they fit together with unevenness when the opening is fully closed. Since the configuration of the lower end portion of the top panel 2 is the same as the configuration of the lower end portion of the panel 3, and the configuration of the upper end portion of the bottom panel 4 is the same as the configuration of the upper end portion of the panel 3, the fitting between adjacent panels in the shutter curtain 1 in the fully closed position according to this embodiment will be described based on the fitting between adjacent panels 3 in the shutter curtain 1 in the fully closed position.

First, we will explain the position of the lower end of the upper panel 3 and the upper end of the lower panel 3 before they fit together. When the shutter curtain 1 descends, each panel 3 is in a vertical position, and the lower end of the upper panel 3 is separated from the upper end of the lower panel 3 (see the left diagram in Figure 4 and Figure 21). Figure 21 shows the positional relationship between the lower end of the upper panel 3 and the upper end of the lower panel 3 when the panels 3 descend. The left diagram in Figure 21 shows the positional relationship between the lower end of the upper panel 3 and the upper end of the lower panel 3 when the outdoor facing surface 30 and the indoor facing surface 31 of the upper and lower panels 3 are aligned.

In the left diagram of FIG. 21, the lower outdoor facing surface 302 at the lower end of the upper panel 3 and the upper end (the hemmed folded portion) of the outdoor side rising piece 303 at the upper end of the lower panel 3 are close to each other (separated in this embodiment), the outdoor side upper surface 320 of the upper surface portion 32 at the upper end of the lower panel 3 is located directly below the outdoor side lower surface 330 of the lower surface portion 33 at the lower end of the upper panel 3, the outdoor side inclined surface 321 of the upper surface portion 32 at the upper end of the lower panel 3 is located directly below the outdoor side inclined surface 331 of the lower surface portion 33 at the lower end of the upper panel 3, and the central horizontal surface 322 of the upper surface portion 32 at the upper end of the lower panel 3 is located directly below the buffer/airtight member 15 provided on the central horizontal surface 332 of the lower surface portion 33 at the lower end of the upper panel 3. is located, and the indoor side inclined surface 323 of the upper surface portion 32 at the upper end portion of the lower panel 3 is located directly below the indoor side inclined surface 333 of the lower surface portion 33 at the lower end portion of the upper panel 3, and the indoor side vertical surface 324 of the upper surface portion 32 at the upper end portion of the lower panel 3 is located slightly outdoors of the indoor side vertical surface 334 of the lower surface portion 33 at the lower end portion of the upper panel 3 (the indoor side vertical surface 334 hangs down close to the indoor side vertical surface 324), and the elastic water-stopping member 16 (upper surface 164) is located directly below the indoor side lower surface 335 of the lower surface portion 33 at the lower end portion of the upper panel 3 in the indoor side part of the upper end portion of the lower panel 3 (groove portion formed by the indoor side vertical surface 324, the indoor side lower surface 325, and the indoor side rising piece 310). When the upper panel 3 moves downward relative to the lower panel 3 from the state shown in the left figure of Figure 21, it becomes the state shown in Figure 19.

The central diagram of FIG. 21 shows a state in which the upper panel 3 is slightly displaced indoors relative to the lower panel 3 when the adjacent panels 3 are lowered. When the shutter curtain 1 is displaced indoors when it is lowered, the indoor facing surface 31 of the panel 3 abuts against the watertight rubber member 55, so it does not displace further indoors from the state shown in the central diagram of FIG. 21. In the central diagram of FIG. 21, the corner of the outdoor side inclined surface 331 at the lower end of the upper panel 3 and the central horizontal plane 330 is located slightly indoors from the corner of the outdoor side upper surface 320 at the upper end of the lower panel 3 and the outdoor side inclined surface 321. When the upper panel 3 moves downward relative to the lower panel 3 from this state, the outdoor side inclined surface 331 of the upper panel 3 is guided by the outdoor side inclined surface 321 of the lower panel 3, and the upper panel 3 moves outdoors relative to the lower panel 3, resulting in the state shown in FIG. 19.

The right side of Figure 21 shows the state in which, when the adjacent panels 3 above and below are lowered, the upper panel 3 is slightly displaced toward the outdoors relative to the lower panel 3. If the shutter curtain 1 is displaced toward the outdoors when it is lowered, the lower outdoor visible surface 302 at the lower end abuts against the outdoor rising piece 303 at the upper end of the lower panel 3, so there is no further displacement toward the outdoors from the state shown in the right side of Figure 21. In the right diagram of Figure 21, the corner of the indoor side vertical surface 334 and the indoor side lower surface 335 at the lower end of the upper panel 3 is located slightly indoors of the corner of the indoor side inclined surface 323 and the indoor side vertical surface 324 at the upper end of the lower panel 3. When the upper panel 3 moves downward relative to the lower panel 3 from this state, the lower outdoor side visible surface 302 at the lower end is guided downward while sliding against the outdoor side rising piece 303 at the upper end of the lower panel 3, and the indoor side vertical surface 334 at the lower end of the upper panel 3 is guided downward while sliding against the indoor side vertical surface 324 of the lower panel 3, resulting in the state shown in Figure 19.

19 shows a state in which the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 are fitted together (the shutter curtain 1 is in a fully closed position and is in a non-vertical compression state) from the state shown in the left diagram of FIG. 21. In FIG. 19, the outdoor side rising piece 303 at the upper end portion of the lower panel 3 is close to the outdoor side of the lower outdoor side visible surface 302 at the lower end portion of the upper panel 3 (the outdoor side rising piece 303 is located at a step formed by the lower edge portion 301 and the lower outdoor side visible surface 302), the outdoor side lower surface 330 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor side upper surface 320 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment), the outdoor side inclined surface 331 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor side inclined surface 321 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment), and the outdoor side rising piece 303 at the upper end portion of the lower panel 3 is close to the outdoor side rising piece 303 at the lower end portion of the upper panel 3 (separated and non-contacting in this embodiment). The cushioning/airtight member 15 provided on the central horizontal surface 332 of the underside portion 33 at the end portion abuts against the central horizontal surface 322 of the upper surface portion 32 at the upper end portion of the lower panel 3, the indoor side inclined surface 333 of the underside portion 33 at the lower end portion of the upper panel 3 is close to the indoor side inclined surface 323 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment), the indoor side vertical surface 334 of the underside portion 33 at the lower end portion of the upper panel 3 is close to the indoor side of the indoor side vertical surface 324 of the upper surface portion 32 at the upper end portion of the lower panel 3, and the indoor side underside surface 335 of the underside portion 33 at the lower end portion of the upper panel 3 abuts against the elastic water-stopping member 16 (upper surface 164) provided in the indoor side portion of the upper end portion of the panel 3 of the lower panel 3. The panels 2, 3, and 4 according to this embodiment are assembled from surface materials made of steel plates of a specified shape, and therefore have the disadvantage that it is difficult to achieve precision compared to aluminum-molded panels. In this embodiment, the above-mentioned fitting structure is adopted to suppress rattling between the panels caused by precision errors. In addition, the lower end portion of the upper panel and the upper end portion of the lower panel are in close contact with each other via the cushioning and airtight member 15 that functions as a damper, so that even if there is a precision error, the panels can be kept in close contact with each other, and the downward pressing force by the vertical compression mechanism 7 can be effectively applied downward.

20 shows the state in which the vertical pressure is applied to the state shown in FIG. 19. In FIG. 20, the outdoor-side rising piece 303 at the upper end of the lower panel 3 is close to the outdoor side of the lower outdoor-side visible surface 302 at the lower end of the upper panel 3 (the outdoor-side rising piece 303 is located at a step formed by the lower edge 301 and the lower outdoor-side visible surface 302), the outdoor-side lower surface 330 of the lower surface portion 33 at the lower end of the upper panel 3 is in contact with the outdoor-side upper surface 320 of the upper surface portion 32 at the upper end of the lower panel 3, the outdoor-side inclined surface 331 of the lower surface portion 33 at the lower end of the upper panel 3 is close to the outdoor-side inclined surface 321 of the upper surface portion 32 at the upper end of the lower panel 3 (separated and not in contact in this embodiment), and the central horizontal The cushioning/airtight member 15 provided on the surface 332 is in a state of being crushed between the central horizontal surface 322 of the upper surface portion 32 at the upper end portion of the lower panel 3, the indoor side inclined surface 333 of the lower surface portion 33 at the lower end portion of the upper panel 3 is in close proximity to the indoor side inclined surface 323 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment), the indoor side vertical surface 334 of the lower surface portion 33 at the lower end portion of the upper panel 3 is in close proximity to the indoor side of the indoor side vertical surface 324 of the upper surface portion 32 at the upper end portion of the lower panel 3, and the indoor side lower surface 335 of the lower surface portion 33 at the lower end portion of the upper panel 3 is in a state of pressing downward the elastic water-stopping member 16 provided on the indoor side portion of the upper end portion of the panel 3 of the lower panel 3.

[C-5] Position of vertical reinforcement in shutter curtain As shown in Fig. 3 and Fig. 8, five sets of vertical reinforcement units consisting of the first vertical reinforcement 27, the second vertical reinforcement 28, and the third vertical reinforcement 29 that are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via the horizontal reinforcement) are provided in the top panel 2 according to this embodiment at intervals in the panel width direction. As shown in Fig. 3 and Fig. 11, five sets of vertical reinforcement units consisting of the first vertical reinforcement 37, the second vertical reinforcement 38, and the third vertical reinforcement 39 that are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via the horizontal reinforcement) are provided in the panel 3 according to this embodiment at intervals in the panel width direction. As shown in Fig. 3 and Fig. 16, five sets of vertical reinforcement units consisting of the first vertical reinforcement 47 and the second vertical reinforcement 48 that are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via the horizontal reinforcement) are provided in the bottom panel 4 according to this embodiment at intervals in the panel width direction. The internal space of the top panel 2, panel 3, and bottom panel main body 4' according to this embodiment is divided into a plurality of spaces (rooms) by a plurality of horizontal reinforcing members and a plurality of vertical reinforcing members. This will be described using the panel 3 as a representative example. As shown in Fig. 11A (see Figs. 11 and 13), the internal space of the panel 3 is divided by the intermediate horizontal reinforcing member 35 and the lower horizontal reinforcing member 36 into an upper area between the upper surface portion 32 and the intermediate horizontal reinforcing member 35, an intermediate area between the intermediate horizontal reinforcing member 35 and the lower horizontal reinforcing member 36, and a lower area between the lower horizontal reinforcing member 36 and the lower surface portion 33. The upper region is further divided into a first space 3A, a second space 3B, a third space 3C, a fourth space 3D, a fifth space 3E, and a sixth space 3F by five first vertical reinforcements 37 extending vertically with gaps in the width direction of the panel, the middle region is further divided into a seventh space 3G, an eighth space 3H, a ninth space 3I, a tenth space 3J, an eleventh space 3K, and a twelfth space 3L by five second vertical reinforcements 38 extending vertically with gaps in the width direction of the panel, and the lower region is further divided into a thirteenth space 3M, a fourteenth space 3N, a fifteenth space 3O, a sixteenth space 3P, a seventeenth space 3Q, and an eighteenth space 3R by five third vertical reinforcements 39 extending vertically with gaps in the width direction of the panel. The first vertical reinforcement members 37 in the upper region are formed with the 19th space 3a, the 20th space 3b, the 21st space 3c, the 22nd space 3d, and the 23rd space 3e, respectively. The second vertical reinforcement members 38 in the middle region are formed with the 24th space 3f, the 25th space 3g, the 26th space 3h, the 27th space 3i, and the 28th space 3j, respectively. The third vertical reinforcement members 39 in the lower region are formed with the 29th space 3k, the 30th space 3l, the 31st space 3m, the 32nd space 3m, and the 33rd space 3o, respectively. Among these 33 spaces, adjacent spaces communicate with each other through at least one hole (hole 3710 in the first vertical reinforcement 37, hole 3810 in the second vertical reinforcement, drainage hole in the horizontal surface 350 of the intermediate horizontal reinforcement 35, drainage hole in the horizontal surface 360 of the lower horizontal reinforcement 36) or opening (opening 3910 below the third vertical reinforcement 39), allowing water to flow between the spaces. In the side portion 34 of the panel 3, holes 340, gaps 341, and openings 342 are formed corresponding to each of the rooms 3A, 3G, 3M, 3F, 3L, and 3R (see FIG. 15). In the lower surface portion 33 of the panel 3, holes or openings are formed corresponding to each of the rooms 3M, 3k, 3N, 3l, 3O, 3m, 3P, 3n, 3Q, 3o, and 3R. Water that has entered the interior of the panel 3 can be drained to the outside through the side portions 34 and the bottom portion 33 of the panel 3, so that, for example, when the water subsides after rising, no water remains inside the panel 3. The above explanation of the structure of the panel 3 can be used in the explanation of the top panel 2 and the bottom panel main body 4'.

As shown in FIG. 3, the vertical reinforcement unit of the top panel 2, the vertical reinforcement unit of the panel 3, and the vertical reinforcement unit of the bottom panel 4 are aligned in the height direction. In this embodiment, three vertical compression mechanisms 7 are arranged at intervals in the opening width direction, and three compressed areas (compressed recesses 221 in this embodiment) are provided in the top panel 3 to correspond to the three vertical compression mechanisms 7, and of the five sets of vertical reinforcement units of the top panel 2, the upper ends of the left and right vertical reinforcement units and the central vertical reinforcement unit are located in the compressed areas. By configuring in this way, each panel 2, 3, and 4 can resist the downward pressing force of the vertical compression mechanisms 7, and can also effectively apply the pressing force downward.

[D] Water-stop structure
[D-1] Water-stopping structure between panels in a shutter curtain in a fully closed position When the shutter curtain 1 in a fully closed position is vertically compressed, a water-stopping structure or a watertight structure is formed between the lower end portion of the top panel 2 and the upper end portion of panel 3, between the lower end portion of panel 3 and the upper end portion of panel 3, and between the lower end portion of panel 3 and the upper end portion of bottom panel 4.

The configuration of the lower end portion of the top panel 2 is the same as the configuration of the lower end portion of panel 3, and the configuration of the upper end portion of the bottom panel 4 is the same as the configuration of the upper end portion of panel 3. Therefore, the water-stopping structure between the panels of the shutter curtain 1 according to this embodiment will be explained based on the water-stopping structure of the vertically adjacent panels 3 in the shutter curtain 1 in the fully closed position.

In this embodiment, the water-stopping structure is formed in the indoor side portion of the shutter curtain 1 in the fully closed position. In the indoor side portion near the upper end of the panel 3, a groove is formed extending in the panel width direction from the indoor side vertical surface 324, the indoor side underside surface 325, and the indoor side rising piece 310, and a long elastic water-stopping member 16 is fitted into the groove. When the shutter curtain 1 descends, the elastic water-stopping member 16 of the lower panel 3 and the indoor side underside surface 335 of the upper panel 3 are separated (see the left diagram in Figure 4), and in the fully closed position of the shutter curtain 1 (non-vertical compression state), the indoor side underside surface 335 of the upper panel 3 abuts against the upper surface 164 of the elastic water-stopping member 16 of the lower panel 3 (see Figure 19). When the shutter curtain 1 in the fully closed position is vertically compressed from the state shown in FIG. 19, the upper surface 164 of the elastic water-stopping member 16 of the lower panel 3 comes into contact with the indoor side lower surface 335 of the upper panel 3, and the elastic water-stopping member 16 is pressed downward, so that the pressed elastic water-stopping member 16 closes the gap between the lower end of the panel 3 and the indoor side portion of the upper end of the panel 3, forming a water-stopping structure (see FIG. 20).

The groove formed in the indoor side portion of the upper end of the panel 3 has a cross-sectional shape that is roughly U-shaped and is made up of the bottom (indoor side lower surface 325), the inner surface of the outer facing piece (indoor side rising piece 310) rising from the outer end of the bottom (indoor side lower surface 325), and a first portion 3240 facing the outer facing piece (indoor side rising piece 310) of the inner facing surface (indoor side vertical surface 324) located inside the bottom (indoor side lower surface 325). The inner facing surface (indoor side vertical surface 324) is adjacent to the first portion 3240 and has a second portion 3241 located outside the groove (above the first portion 3240 and above the upper end of the outer facing piece (indoor side rising piece 310)).

24 and 25, the long elastic water-stopping member 16 fitted into a groove extending in the panel width direction is integrally formed of a hard elastic portion 16A located inside the groove and a soft elastic portion 16B located outside the groove. In other words, the soft elastic portion 16B is integrally formed on a base (foundation) formed of the hard elastic portion 16A. In this embodiment, the hard elastic portion 16A is formed from flame-retardant rubber (such as chloroprene rubber) and the soft elastic portion 16B is formed from flame-retardant rubber sponge (such as chloroprene rubber sponge), but these materials are merely examples and are not limiting. In this embodiment, the elastic water-stopping member 16 is integrally formed with a hard elastic portion 16A located inside the groove and a soft elastic portion 16B located outside the groove, which prevents the base (foundation) of the elastic water-stopping member 16 from deforming inside the groove when the panel is subjected to its own weight or vertical pressure, and maintains the shape of the base (foundation) of the elastic water-stopping member 16.

24, the hard elastic part 16A has a bottom surface 160, an inner facing surface 161, an outer facing surface 162, and a connection surface (upper surface) 163, and the soft elastic part 16B has an abutting surface (upper surface) 164, an inner facing surface 165, an outer facing surface 166, and a connection surface (lower surface) 167 that is in close contact with the connection surface (upper surface) 163. Note that in the description of the elastic water-stopping member 16, "inner surface" refers to the side closer to the indoor side vertical surface 324 when fitted into the groove, and "outer surface" refers to the side farther from the indoor side vertical surface 324 when fitted into the groove.

The connection surface (upper surface) 163 of the hard elastic portion 16A consists of a first horizontal surface 1630 and a first inclined surface 1631 that inclines from the outside of the first horizontal surface 1630 toward the bottom surface 160, and the connection surface (lower surface) 167 of the soft elastic portion 16B consists of a second horizontal surface 1670 and a second inclined surface 1671 that inclines from the outside of the second horizontal surface 1670 away from the top surface 164, and the first horizontal surface 1630 and the second horizontal surface 1670, and the first inclined surface 1631 and the second inclined surface 1671 are in close contact with each other.

The top surface of the elastic water-stopping member 16 is formed from the top surface 164 of the soft elastic portion 16B, and the bottom surface of the elastic water-stopping member 16 is formed from the bottom surface 160 of the hard elastic portion 16A. The inner visible surface 161 of the hard elastic portion 16A and the inner visible surface 165 of the soft elastic portion 16B are flush with each other, and the inner visible surface 161 of the hard elastic portion 16A and the inner visible surface 165 of the soft elastic portion 16B form the inner visible surface of the elastic water-stopping member 16.

The inner facing surface 161 of the hard elastic part 16A has a plurality of protrusions 1610 (four in the illustrated embodiment) protruding therefrom and extending in the width direction of the panel. In other words, the inner facing part of the hard elastic part 16A is made up of the inner facing surface 161 and a plurality of protrusions 1610 formed on the inner facing surface 161 and extending in the width direction of the panel.

The outer facing surface 166 of the soft elastic part 16B is composed of a first part 1660 on the bottom surface 160 side and a second part 1661 on the abutted surface (upper surface) 164 side. As described later, the outer facing surface 166 of the soft elastic part 16B is composed of a first part 1660 that is in close contact with the inner surface of the outer facing piece (indoor side rising piece 310) and a second part 1661 located outside the groove part. The outer facing part 162 of the hard elastic part 16A is composed of a protrusion 1620 that protrudes at an angle so as to move away from the bottom surface 160, and a recess 1621 adjacent to the upper side of the protrusion 1620 and allowing the protrusion 1620 to elastically deform. When no external force is applied to the elastic water-stopping member 16, the tip of the protrusion 1620 is located slightly inside the outer facing surface 166 of the soft elastic part 16B, but may be approximately coincident.

As shown in FIG. 25, the hard elastic part 16A of the elastic water-stopping member 16 is fitted into the groove, and most of the soft elastic part 16B of the elastic water-stopping member 16 is located outside the groove (above the groove), and only the outer and lower part is located inside the groove. When the elastic water-stopping member 16 is fitted into the groove, the bottom surface of the elastic water-stopping member 16 (bottom surface 160 of the hard elastic part 16A) abuts against the bottom (indoor side lower surface 325), and the inner facing part of the hard elastic part 16A abuts against the first part 3240 of the inner facing surface of the groove (indoor side vertical surface 324) via the protrusion 1610, and the outer facing part 162 of the hard elastic part 16A is in close contact with the inner surface of the outer facing piece (indoor side rising piece 310) via the protrusion 1620.

The outer portion (1660) of the portion located within the groove of the soft elastic portion 16B is in close contact with the inner surface of the outer facing piece (indoor side rising piece 310). Specifically, the portion surrounded by the lower portion (first portion 1660) of the outer facing surface 166 of the soft elastic portion 16B and the second inclined surface 1671 is located within the groove, and the first portion 1660 of the outer facing surface 166 is in a crushed state (indicated by 1660') and is in close contact with the inner surface of the outer facing piece (indoor side rising piece 310).

The inner facing portion of the hard elastic portion 16A abuts against the first portion 3240 of the inner facing surface of the groove portion (indoor side vertical surface 324) via the protrusion 1610, and a force acts in the direction of pressing the elastic water-stopping member 16 against the inner surface of the outer facing piece (indoor side rising piece 310), so that the first portion 1660 of the outer facing surface 166 is in a crushed state (1660') and adheres closely to the inner surface of the outer facing piece (indoor side rising piece 310), and the protrusion 1620 of the hard elastic portion 16A is in an upward elastically deformed state, with its tip side adhering closely to the inner surface of the outer facing piece (indoor side rising piece 310).

When the elastic water-stopping member 16 is fitted into the groove, the protrusion 1620 of the outer facing portion 162 of the hard elastic portion 16A extends at an angle away from the bottom surface 160, and the tip side is in close contact with the inner surface of the outer facing piece (the indoor side rising piece 310), pushing against the direction in which the elastic water-stopping member 16 would slip out of the groove, preventing the elastic water-stopping member 16 from slipping out of the groove.

The inner visible surface 161 of the hard elastic part 16A and the inner visible surface 165 of the soft elastic part 16B are flush with each other, and in the non-vertical compression position, the inner visible surface 165 of the soft elastic part 16B is in close proximity to (spaced apart in this embodiment and in a non-contact state) the second part 3241 of the inner visible surface of the groove part (the indoor side vertical surface 324) (Figure 25), and in the vertical compression position, the hard elastic part 16A is pressed in the height direction, so that the inner visible surface 165 comes into close contact with the second part 3241 (Figure 26).

When the elastic water-stopping member 16 is in the vertical compression position, the indoor side lower surface 335 of the upper panel 3 is pressed against the upper surface 164 of the elastic water-stopping member 16 of the lower panel 3, forming a water-stopping structure in the indoor side area between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3. Furthermore, as shown in FIG. 20, when the elastic water-stopping member 16 is in the vertical compression position, the elastic water-stopping member 16 is pressed in the height direction, so that the lower end portion (area adjacent to the first portion 1660) of the second portion 1661 of the outer visible surface 166 of the soft elastic portion 16B is in close contact with the tip edge (upper edge) 3100 of the outer visible piece (indoor side rising piece 310), forming a water-stopping structure.

As shown in FIG. 20, the inner visible surface 165 of the soft elastic portion 16B of the elastic water-stopping member 16 is in close contact with the second portion 3241, thereby sealing the gap between the elastic water-stopping member 16 and the inner visible surface (indoor side vertical surface 324), and the bottom surface 160 of the elastic water-stopping member 16 is in close contact with the bottom surface (325) of the groove. Even if water seeps in from the interface between the groove and the elastic water-stopping member 16, the lower end portion (the portion adjacent to the first portion 1660) of the second portion 1661 of the outer visible surface 166 of the soft elastic portion 16B is in close contact with the tip edge (upper edge) 3100 of the outer visible piece (indoor side rising piece 310), preventing water from entering the indoor side.

The second portion 1661 of the outer facing surface 166 bulges outward (indicated as 1661') from the outer surface of the outer facing piece (the indoor side rising piece 310). Please note that the bulging shape of the second portion 1661 shown in FIG. 26 is only an example, and the bulging shape may differ depending on the way in which force is applied. As described below, in the vertical compression and horizontal compression state, the bulging second portion 1661' of the outer facing surface 166 is in close contact with the watertight rubber member 55.

[D-2] Water-stopping structure between bottom panel body and seat plate in fully closed shutter curtain When the shutter curtain 1 in the fully closed position is vertically compressed, a water-stopping structure is formed in the bottom panel 4 between the bottom panel body 4' and the movable seat plate 6. In this embodiment, the water-stopping structure is formed on the indoor side of the bottom panel 4 of the shutter curtain 1 in the fully closed position.

A groove is formed on the indoor side of the movable seat plate 6, extending from the indoor side of the bottom surface 60, the indoor side rising piece 62, and the indoor side visible surface 64 in the length direction of the movable seat plate 6 (width direction of the bottom panel 4), and an indoor side elastic water-stopping member 16β is fitted into the groove. When the shutter curtain 1 descends, the indoor side lower surface 431 at the lower end of the main body 4' and the elastic water-stopping member 16β provided in the groove on the indoor side of the movable seat plate 6 are separated (see Figure 22), and when the shutter curtain 1 is in the fully closed position (non-vertical compression state), the indoor side lower surface 431 at the lower end of the main body 4' abuts against the upper surface 164 of the elastic water-stopping member 16β (see Figure 22). When the shutter curtain 1 in the fully closed position is vertically compressed from the state shown in FIG. 22, the upper surface 164 of the elastic water-stopping member 16β is pressed downward with the indoor side lower surface 431 of the lower end portion of the main body 4' in contact with the elastic water-stopping member 16β, and the pressed elastic water-stopping member 16β closes the gap between the lower end portion of the panel main body 4' and the indoor side portion of the movable base plate 6, forming a water-stopping structure (see FIG. 28).

The groove formed in the indoor side portion of the upper end of the panel 3 has a roughly U-shaped cross section consisting of the bottom (indoor side portion of the bottom surface 60), the inner surface of the outer facing piece (indoor side rising piece 62) rising from the outer end of the bottom, and a first portion 640 facing the outer facing piece (indoor side rising piece 62) of the inner facing surface (indoor side facing surface 64) located on the inside of the bottom, and the inner facing surface (indoor side facing surface 64) has a second portion 641 adjacent to the first portion 640 and located outside the groove (above the first portion 640 and above the upper end of the outer facing piece (indoor side rising piece 62)).

24 and 27, the long elastic water-stopping member 16β fitted into a groove extending in the panel width direction (seat width direction) is integrally formed of a hard elastic portion 16A located within the groove and a soft elastic portion 16B whose upper portion is located outside the groove. In other words, the soft elastic portion 16B is integrally formed on a base (foundation) formed by the hard elastic portion 16A. In this embodiment, the hard elastic portion 16A is formed from flame-retardant rubber (chloroprene rubber, etc.), and the soft elastic portion 16B is formed from flame-retardant rubber sponge (chloroprene rubber sponge, etc.), but these materials are merely examples and are not limited. In this embodiment, the elastic water-stopping member 16 is integrally formed with a hard elastic portion 16A located inside the groove and a soft elastic portion 16B located outside the groove, which prevents the base (foundation) of the elastic water-stopping member 16 from deforming inside the groove when the panel is subjected to its own weight or vertical pressure, and maintains the shape of the base (foundation) of the elastic water-stopping member 16.

The basic structure of the elastic water-stopping member 16β is the same as that of the elastic water-stopping member 16, and can be described with reference to FIG. 24. As shown in FIG. 24, the hard elastic part 16A has a bottom surface 160, an inner facing surface 161, an outer facing surface 162, and a connection surface (upper surface) 163, and the soft elastic part 16B has an abutting surface (upper surface) 164, an inner facing surface 165, an outer facing surface 166, and a connection surface (lower surface) 167 that is in close contact with the connection surface (upper surface) 163. Note that in the description of the elastic water-stopping member 16, the "inner surface" refers to the side closer to the indoor facing surface 64 of the movable seat plate 6 when it is fitted into the groove, and the "outer surface" refers to the side farther from the indoor facing surface 64 when it is fitted into the groove.

The connection surface (upper surface) 163 of the hard elastic portion 16A consists of a first horizontal surface 1630 and a first inclined surface 1631 that inclines from the outside of the first horizontal surface 1630 toward the bottom surface 160, and the connection surface (lower surface) 167 of the soft elastic portion 16B consists of a second horizontal surface 1670 and a second inclined surface 1671 that inclines from the outside of the second horizontal surface 1670 away from the top surface 164, and the first horizontal surface 1630 and the second horizontal surface 1670, and the first inclined surface 1631 and the second inclined surface 1671 are in close contact with each other.

The top surface of the elastic water-stopping member 16 is formed from the top surface 164 of the soft elastic portion 16B, and the bottom surface of the elastic water-stopping member 16 is formed from the bottom surface 160 of the hard elastic portion 16A. The inner visible surface 161 of the hard elastic portion 16A and the inner visible surface 165 of the soft elastic portion 16B are flush with each other, and the inner visible surface 161 of the hard elastic portion 16A and the inner visible surface 165 of the soft elastic portion 16B form the inner visible surface of the elastic water-stopping member 16.

The inner facing surface 161 of the hard elastic part 16A has a plurality of protrusions 1610 (three in the illustrated embodiment, see FIG. 27) protruding therefrom and extending in the width direction of the panel. In other words, the inner facing part of the hard elastic part 16A is made up of the inner facing surface 161 and a plurality of protrusions 1610 formed on the inner facing surface 161 and extending in the width direction of the panel.

The outer facing surface 166 of the soft elastic part 16B is composed of a first part 1660 on the bottom surface 160 side and a second part 1661 on the abutted surface (upper surface) 164 side. As described later, the outer facing surface 166 of the soft elastic part 16B is composed of a first part 1660 that is in close contact with the inner surface of the outer facing piece (indoor side rising piece 62) and a second part 1661 located outside the groove part. The outer facing part 162 of the hard elastic part 16A is composed of a protrusion 1620 that protrudes at an angle so as to move away from the bottom surface 160, and a recess 1621 adjacent to the upper side of the protrusion 1620 and allowing the protrusion 1620 to elastically deform. When no external force is applied to the elastic water-stopping member 16, the tip of the protrusion 1620 is located slightly inside the outer facing surface 166 of the soft elastic part 16B, but may be approximately coincident.

As shown in FIG. 27, the hard elastic part 16A of the elastic water-stopping member 16 is fitted into the groove, and the lower part of the soft elastic part 16B of the elastic water-stopping member 16 is located inside the groove, and the upper part is located outside the groove (above the groove). When the elastic water-stopping member 16 is fitted into the groove, the bottom surface of the elastic water-stopping member 16 (bottom surface 160 of the hard elastic part 16A) abuts against the bottom (the indoor side part of the bottom surface 60), and the inner facing part of the hard elastic part 16A abuts against the first part 640 of the inner facing surface of the groove (indoor side facing surface 64) via the protrusion 1610. The outer facing part 162 of the hard elastic part 16A is in close contact with the inner surface of the outer facing piece (indoor side rising piece 62) via the protrusion 1620.

The outer portion (1660) of the portion located within the groove of the soft elastic portion 16B is in close contact with the inner surface of the outer facing piece (indoor side rising piece 62). Specifically, the lower portion of the soft elastic portion 16B is located within the groove, and the first portion 1660 of the outer facing surface 166 is in a crushed state (indicated by 1660') and is in close contact with the inner surface of the outer facing piece (indoor side rising piece 62).

The inner facing portion of the hard elastic portion 16A abuts against the first portion 640 of the inner facing surface (indoor facing surface 64) of the groove portion via the protrusion 1610, and a force acts in the direction of pressing the elastic water-stopping member 16 against the inner surface of the outer facing piece (indoor rising piece 62), so that the first portion 1660 of the outer facing surface 166 is in a crushed state (1660') and adheres closely to the inner surface of the outer facing piece (indoor rising piece 62), and the protrusion 1620 of the hard elastic portion 16A is elastically deformed upward and its tip side adheres closely to the inner surface of the outer facing piece (indoor rising piece 62).

When the elastic water-stopping member 16 is fitted into the groove, the protrusion 1620 of the outer facing portion 162 of the hard elastic portion 16A extends at an angle away from the bottom surface 160, and the tip side is in close contact with the inner surface of the outer facing piece (the indoor side rising piece 62), pushing against the direction in which the elastic water-stopping member 16β would slip out of the groove, preventing the elastic water-stopping member 16 from slipping out of the groove.

The inner facing surface 161 of the hard elastic part 16A and the inner facing surface 165 of the soft elastic part 16B are flush with each other, and in the non-vertical compression position, the inner facing surface 165 of the soft elastic part 16B is in close proximity to the second part 641 of the inner facing surface of the groove (indoor facing surface 64) (in this embodiment, it is spaced apart and in a non-contact state) (Figure 27), and in the vertical compression position, the hard elastic part 16A is pressed in the height direction, so that the inner facing surface 165 comes into close contact with the second part 641 (Figure 28).

When the elastic water-stopping member 16β is in the vertical compression position, the indoor side lower surface 431 of the bottom panel main body 4' is pressed against the upper surface 164 of the elastic water-stopping member 16β provided in the indoor side groove of the movable seat plate 6, forming a water-stopping structure in the indoor side area between the lower end portion of the bottom panel main body 4' and the movable seat plate 6. Furthermore, as shown in FIG. 28, when the elastic water-stopping member 16β is in the vertical compression position, the elastic water-stopping member 16β is pressed in the height direction, so that the lower end portion (area adjacent to the first portion 1660) of the second portion 1661 of the outer facing surface 166 of the soft elastic portion 16B is in close contact with the tip edge (upper edge) 620 of the outer facing piece (indoor side rising piece 62), forming a water-stopping structure.

As shown in FIG. 28, the inner visible surface 165 of the soft elastic portion 16B of the elastic water-stopping member 16β is in close contact with the second portion 641, thereby closing the gap between the elastic water-stopping member 16β and the inner visible surface (indoor visible surface 64), and the bottom surface 160 of the elastic water-stopping member 16β is in close contact with the indoor portion of the bottom surface 60 of the groove. Even if water seeps in from the interface between the groove and the elastic water-stopping member 16β, the lower end portion (the portion adjacent to the first portion 1660) of the second portion 1661 of the outer visible surface 166 of the soft elastic portion 16B is in close contact with the tip edge (upper edge) 620 of the outer visible piece (indoor rising piece 62), preventing water from entering the indoor side.

The second portion 1661 of the outer visible surface 166 bulges outward from the outer surface of the outer visible piece (indoor side rising piece 62) (indicated by 1661'). Please note that the bulging shape of the second portion 1661 shown in FIG. 28 is one example, and the bulging shape may differ depending on how force is applied. As described below, in the vertical compression and horizontal compression state, the bulging second portion 1661' of the outer visible surface 166 is in close contact with the watertight rubber member 55.

A groove is formed in the outdoor portion of the movable seat plate 6, extending from the outdoor portion of the bottom surface 60, the outdoor rising piece 61, and the outdoor facing surface 63 in the length direction of the movable seat plate 6 (width direction of the bottom panel 4), and an outdoor elastic water-stopping member 16α is fitted into the groove. When the shutter curtain 1 is in the fully closed position, the outdoor lower surface 430 of the panel body 4' abuts against the outdoor elastic water-stopping member 16α, which will be described later in the explanation of the airtight structure.

[D-3] Water-stopping structure at the bottom end of the shutter curtain in the fully closed position When the shutter curtain 1 in the fully closed position is vertically compressed, a water-stopping structure is formed between the bottom end portion of the bottom panel 4 (in this embodiment, the movable seat plate 6) and the floor surface. An elastic water-stopping member 19 is provided over the entire width of the bottom surface 60 of the movable seat plate 6. As shown in FIG. 18, the elastic water-stopping member 19 is composed of end water-stopping members 191 provided on the underside of both end portions of the bottom surface 60 of the movable seat plate 6, and two narrow intermediate water-stopping members 190 provided on the underside of the middle portion (in the width direction) of the bottom surface 60 and in close contact with the end water-stopping members 191. The elastic water-stopping members 19 are fixed to the bottom surface 60 of the seat plate 6 by screws.

In this embodiment, a base elastic material 190' is provided on the bottom surface 60 of the movable seat plate 6 between the end water-stopping members 191 at both ends, and the narrow intermediate water-stopping member 190 is fixed to the base elastic material 190'. The thickness of the intermediate water-stopping member 190 and the base elastic material 190' is approximately the same as the thickness of the end water-stopping member 191, but in this embodiment, the lower surface of the narrow intermediate water-stopping member 190 bulges slightly downward in a cross-sectional view cut in the expected direction (see FIG. 22). In this embodiment, the base elastic material 190' is made of flame-retardant rubber (such as chloroprene rubber), and the end water-stopping members 191 and the intermediate water-stopping member 190 are made of flame-retardant rubber sponge (such as chloroprene rubber sponge) that is softer than the base elastic material 190', but these materials are examples and are not limited.

The end water-stopping members 191 and the base elastic material 190' at both ends have a projected dimension that is the same as the projected dimension of the bottom surface 60 of the seat plate 6 (the projected dimension of the bottom panel main body 4'), and the two narrow intermediate water-stopping members 190 are both arranged to fit within the projected dimension of the bottom surface 60 of the seat plate 6. Of the two intermediate water-stopping members 190, the intermediate water-stopping member 190 located on the outdoor side extends between the end water-stopping members 191 at both ends at a position away from the outdoor-side facing piece 61 of the movable seat plate 6 to the indoor side (inner side). The intermediate water-stopping member 190 located on the indoor side extends between the end water-stopping members 191 at both ends at a position away from the indoor-side rising piece 62 of the movable seat plate 6 to the outdoor side (inner side).

The outdoor side intermediate water stop member 190 is located inside the outdoor side visible piece 61 of the movable seat plate 6, and the indoor side intermediate water stop member 190 is located inside the indoor side rising piece 62 of the movable seat plate 6. This means that when the shutter curtain 1 is in the fully closed position, the intermediate water stop member 190 is not exposed to the outside, which improves the aesthetic appearance, especially when viewed from the outdoor side.

Since the narrow intermediate water-stopping member 190 has a small contact area with the floor surface, when pressed downward with the same force (the weight of the panel when in the normal fully closed position, or the pressing pressure when pressed vertically), the surface pressure pressed against the floor surface is greater than with a wide water-stopping member, and the greater force with which it adheres to the floor surface improves airtightness and waterproofing.

When the shutter curtain 1 is in a fully closed position, the elastic water-stopping member 19 provided on the bottom surface 60 of the movable seat plate 6 is actually designed to be in close contact with the upper surface 90 of the lower frame or the footsill embedded in the floor surface FL, and the expected dimensions of the upper surface 90 are limited (see FIG. 31). Here, when the shutter curtain 1 is in a vertical compression state or a horizontal compression state, when water pressure acts on the shutter curtain 1 from the outdoor side toward the indoor side, the shutter curtain 1 may deform or displace to the indoor side. At this time, the elastic water-stopping member 19 will be displaced to the indoor side relative to the upper surface 90 of the lower frame, but since the indoor side intermediate water-stopping member 190 is located inside the indoor side rising piece 62, even if the bottom panel 4 is displaced to the indoor side, the indoor side intermediate water-stopping member 190 and the upper surface 90 of the lower frame are maintained in close contact with each other (see FIG. 31).

As shown in FIG. 30, at least a portion of the end water-stopping member 191 is positioned within the guide body 5 in the fully closed position. The outdoor side portion of the end water-stopping member 191 is approximately flush with the outdoor side facing piece 61 of the movable seat plate 6, and the indoor side portion of the end water-stopping member 191 is approximately flush with the indoor side rising piece 62 of the movable seat plate 6. As described below, in the vertical compression and horizontal compression states, the indoor side portion of the end water-stopping member 191 is in close contact with the watertight rubber member 55 together with the indoor side rising piece 62 of the movable seat plate 6.

[D-4] Water-stopping structure of both widthwise ends of shutter curtain in fully closed position As shown in Figures 5, 6, 29, and 30, the widthwise ends of the shutter curtain 1 (top panel 2, panel 3, bottom panel 4) in the fully closed position are received in the opening between the horizontal pressing member 82 on the outdoor side and the watertight rubber member 55 on the indoor side, and the outdoor side peripheral surface of the guide roller 11 at the tip of the support shaft 10 protruding from the widthwise end is in contact with or close to the guide member 53 provided on the bottom side of the guide body 5. By moving the chain up and down, each panel moves up and down vertically, with the outdoor side peripheral surface of the guide roller 11 of the support shaft 10 at both widthwise ends being guided by the guide member 53 and the widthwise ends being guided by the watertight rubber member 55, while the outdoor side portion and the indoor side portion are in contact with the fins 54, respectively. The outdoor side peripheral surface of the guide roller 11 comes into contact with the guide member 53, thereby regulating contact between the metallic horizontal pressing member 82 and the widthwise end of the shutter curtain 1 during normal opening/closing and during the normal fully closed state.

By pressing the end of the shutter curtain 1 in a fully closed position (vertically compressed state) toward the indoor side by the horizontal pressing member 82, the widthwise end of the indoor side portion of the shutter curtain 1 (indoor side visible surfaces 21, 31, 41, indoor side rising piece 62, elastic water-stopping member 16, elastic water-stopping member 16β, end water-stopping member 191 of elastic water-stopping member 19) is pressed against the watertight rubber member 55, resulting in a water-stopping structure that extends in the height direction of both ends of the shutter curtain in the width direction (see Figures 7 and 30).

When the shutter curtain 1 in the fully closed position is vertically compressed, the part of the elastic water-stopping member 16 and the elastic water-stopping member 16β exposed to the indoor side (the second part 1661 of the outer visible surface 166) bulges slightly indoors (1661') relative to the indoor side visible surfaces 21, 31, 41 and the indoor side rising piece 62 (see Figure 7), increasing the degree of adhesion with the watertight rubber member 55. The indoor side visible surface of the end water-stopping member 191 at the widthwise end of the elastic water-stopping member 19 is flush with the indoor side visible surface 41 and the indoor side rising piece 62 of the seat panel 6, and is in close contact with the watertight rubber member 55 together with the indoor side visible surface 41 and the indoor side rising piece 62 of the seat panel 6.

[D-5] Water-stopping structure of the entire shutter curtain in both vertical and horizontal compression states In the vertical compression state of the shutter curtain, the elastic water-stopping member 16 water-tightly seals the gap between the upper and lower adjacent panels across the width, the elastic water-stopping member 16β water-tightly seals the gap between the bottom panel body 4' and the seat plate 6 across the width, and the elastic water-stopping member 19 water-tightly seals the gap between the lower end of the bottom panel 4 (the lower end of the seat plate 6) and the floor surface. When the shutter curtain 1 in the vertical compression state is further compressed horizontally to enter a horizontal compression state, the widthwise ends of the indoor side portion of the shutter curtain 1 (indoor side visible surface 21, 31, 41, indoor side rising piece 62, elastic water-stopping member 16, elastic water-stopping member 16β, end water-stopping member 191 of elastic water-stopping member 19) are pressed against the watertight rubber member 55, sealing both ends of the opening width direction in a watertight state. When the shutter curtain is in this compressed state (vertical compression state and horizontal compression state), the space between the upper and lower panels is closed in a watertight manner, and water-stopping lines are formed on three sides of the shutter device (both widthwise ends of the shutter curtain 1 located within the left and right guide bodies 5 and the lower end of the shutter curtain) to prevent water from entering the indoor space.

[D-5] Water-stopping structure of the surface of the bottom panel main body The waterproof panel shutter according to this embodiment is provided with an obstacle detection means consisting of a movable seat plate 6 and a detection switch SW at the lower end of the bottom panel 4. When the movable seat plate 6 at the lower end of the bottom panel 4 touches the floor or an obstacle and moves upward by a predetermined amount, the detection switch SW turns ON, and an obstacle detection signal is sent to the control unit of the opening/closing machine M via the cord reel CR, and the shutter curtain 1 being lowered stops. As shown in Figure 1, the opening/closing machine M is provided in the shutter storage space above the opening at a position close to one end in the width direction, and the cord reel CR is arranged at the lintel above the opening on the indoor side of the ascending/descending path of the shutter curtain 1, and the cord reel CR and the control unit of the opening/closing machine M are electrically connected. The cable C1 of the cord reel CR extends downward along the indoor side of the shutter curtain 1 when the shutter curtain 1 is raised or lowered, and the lower end of the cable C1 is electrically connected to a relay cable C2 that penetrates the lower part of the indoor facing surface 41 of the bottom panel main body 4', and the relay cable C2 extends inside the bottom panel main body 4' and is electrically connected to a cable C3 that extends from the detection switch SW.

22 and 32, the relay cable C2 includes a first portion 110 located on the indoor side, a second portion 111 located on the bottom panel main body 4', and a relay cable holder 112 located between the first portion 110 and the second portion 111. The relay cable holder 112 includes a horizontally elongated lid portion 113 having an outer shape larger than a through hole formed in a lower portion of the indoor side visible surface 41 of the bottom panel main body 4', and an insertion portion 114 inserted into the through hole, a hole portion 1130 is formed in the lid portion 113, and a disk-shaped abutment body (rubber bush) 115 having approximately the same dimensions as the inner diameter of the insertion portion 114 is provided on the base end side of the internal space of the insertion portion 114, which is larger than the hole portion 1130 and closes the hole portion 1130 from the inside, and the relay cable C2 is inserted into the abutment body 115. An insertion portion for relay cable C2 is formed from a hole 1130 in the lid portion 113 and the internal space of the insertion portion 114. The relay cable C2 passes through the internal space of the insertion portion 114 and extends into the inside of the bottom panel main body 4'. The first portion 110 is provided with a terminal 116 for electrical connection to cable C1, and the second portion 111 is provided with a terminal 117 for electrical connection to cable C3.

In the waterproof panel shutter of this embodiment, a water stop line is formed on the indoor side of the shutter curtain 1 when in the fully closed position, so water is permitted to enter the inside of the bottom panel main body 4', and it is necessary to prevent water that has entered the inside of the bottom panel main body 4' from entering the indoor side through the penetration part or relay cable C2.

As shown in FIG. 32, the internal space of the insertion part (the space surrounded by the wall surface of the insertion part and the second surface of the abutment body) is filled with caulking material 118 to surround the relay cable C2. A waterproofing treatment using a rubber packing 119 is applied between the inner surface of the lid part 113 and the indoor facing surface 41 around the through hole. The relay cable C2 is fixed to a liner 120 provided on the back surface of the surface material forming the indoor facing surface 41 by a screw (not shown) with the lid part 113 abutting against the indoor facing surface 41 via the rubber packing 119. The rubber packing 119 prevents water from entering the outdoor side through the gap between the penetration part formed on the indoor facing surface 41 of the bottom panel main body 4' and the lid part 113, and the caulking material 118 prevents water from entering the outdoor side along the relay cable C2. The first portion 110 and terminal 116 located on the indoor side of the relay cable C2, and the lid portion 113 of the relay cable holder 112 are housed inside a cover 121 that is openably or detachably attached to the indoor visible surface 41, and the cable C1 extends to the outside through a hole formed in the cover 121 (see Figure 33).

[E] Airtight structure (smokeproof structure) and aijakurari structure (fireproof structure)
The waterproof shutter according to this embodiment can be used as a so-called management panel shutter, and functions as a fireproof and smokeproof shutter in the normal closed state of the building opening. The panels 2, 3, and 4 constituting the shutter curtain 1 are made of steel panels (assembled from steel plates made of steel or stainless steel, with a plate thickness of, for example, 1.5 mm or more), and the seat plate 6 and the guide body 5 are also made of steel plates (steel or stainless steel), improving fire resistance. When the shutter curtain 1 is in a fully closed position, a tucked structure is formed between the lower part of the upper panel and the upper part of the lower panel of the panels adjacent to each other vertically. In addition, in order to function as a fireproof and smokeproof shutter in the normal closed state, the waterproof shutter is provided with an airtight structure for preventing smoke and flames from entering the indoor side from the outdoor side. In addition, the airtight structure according to this embodiment can also prevent smoke and flames from escaping from the indoor side to the outdoor side in the event of a fire.

[E-1] Airtight structure between panels in a shutter curtain in a fully closed position When the shutter curtain 1 is in a fully closed state, an airtight structure is formed between the lower end portion of the top panel 2 and the upper end portion of the panel 3, between the lower end portion of the panel 3 and the upper end portion of the panel 3, and between the lower end portion of the panel 3 and the upper end portion of the bottom panel 4. Since the configuration of the lower end portion of the top panel 2 is the same as the configuration of the lower end portion of the panel 3, and the configuration of the upper end portion of the bottom panel 4 is the same as the configuration of the upper end portion of the panel 3, the airtight structure between panels of the shutter curtain 1 according to this embodiment will be described based on the airtight structure of the vertically adjacent panels 3 in the shutter curtain 1 in a fully closed position.

As shown in Figure 14, at the lower end of the panel 3, airtight members are provided continuously across the entire width of the panel, consisting of a cushioning/airtight member 15, left and right end lower airtight members 18 that are in close contact with both longitudinal ends of the cushioning/airtight member 15, and left and right end room outer airtight members 17 that are in close contact with the outdoor side portions of the left and right end lower airtight members 18.

As shown in FIG. 19, when the shutter curtain 1 is in a fully closed state, in a cross-sectional view of the widthwise middle portion of the panel 3, the outdoor side rising piece 303 at the upper end portion of the lower panel 3 is close to the outdoor side of the lower outdoor side visible surface 302 at the lower end portion of the upper panel 3 (the outdoor side rising piece 303 is located at a step formed by the lower edge portion 301 and the lower outdoor side visible surface 302), the outdoor side lower surface 330 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor side upper surface 320 of the upper surface portion 32 at the upper end portion of the lower panel 3 (spaced apart and not in contact in this embodiment), and the outdoor side inclined surface 331 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor side inclined surface 321 of the upper surface portion 32 at the upper end portion of the lower panel 3 (spaced apart and not in contact in this embodiment). In this state), the cushioning/airtight member 15 provided on the central horizontal surface 332 of the lower surface portion 33 at the lower end of the upper panel 3 abuts against the central horizontal surface 322 of the upper surface portion 32 at the upper end of the lower panel 3, but at both widthwise ends of the panel 3, the end lower airtight member 18 at the lower end of the upper panel 3 is in close contact with the outdoor upper surface 320 and the outdoor inclined surface 321 of the upper surface portion 32 at the upper end of the lower panel 3, and the left and right end room outer airtight members 17 are located outside the panel widthwise edge 3030 of the outdoor side rising piece 303 (see FIG. 36), and the outer surface of the end room outer airtight member 17 is approximately flush with the main surface portion 300 of the outdoor side visible surface 30 of the panel 3 and the outer surface of the outdoor side rising piece 303 (in this embodiment, it is located slightly on the outdoor side) (see FIG. 15, FIG. 36).

[E-2] Airtight structure between the bottom panel body and the seat plate in the shutter curtain in the fully closed position When the shutter curtain 1 is in the fully closed state, an airtight structure is formed between the bottom panel body 4' and the movable seat plate 6 in the bottom panel 4. In this embodiment, the airtight structure is formed in the outdoor part of the bottom panel 4 of the shutter curtain 1 in the fully closed position. As shown in FIG. 23, in the outdoor part of the movable seat plate 6, a groove is formed extending in the length direction of the movable seat plate 6 (width direction of the bottom panel 4) from the outdoor part of the bottom surface 60, the outdoor rising piece 61, and the outdoor facing surface 63, and an outdoor elastic water-stopping member 16α is fitted in the groove. When the shutter curtain 1 is in the fully closed position, the outdoor lower surface 430 of the panel body 4' abuts against the upper surface of the outdoor elastic water-stopping member 16α, so that an airtight structure is formed over the entire width between the bottom panel body 4' and the movable seat plate 6.

[E-3] Airtight structure at the bottom of the shutter curtain in the fully closed position When the shutter curtain 1 is in the fully closed state, an airtight structure is formed between the bottom end portion of the bottom panel 4 (in this embodiment, the movable seat plate 6) and the floor surface. An elastic water-stopping member 19 is provided over the entire width of the bottom surface 60 of the movable seat plate 6, and the elastic water-stopping member 19 abuts against the floor surface due to the weight of the shutter curtain 1, thereby functioning as an airtight member (see FIG. 23).

[E-4] Airtight structure of both widthwise ends of a shutter curtain in a fully closed position As shown in Figures 5 and 34, the widthwise ends of the shutter curtain 1 (top panel 2, panel 3, bottom panel 4) in a fully closed position are received in the opening between the horizontal pressing member 82 on the outdoor side and the watertight rubber member 55 on the indoor side, and the outdoor side peripheral surface of the guide roller 11 at the tip of the support shaft 10 protruding from the widthwise end is in contact with or close to the guide member 53 provided on the bottom side of the guide body 5.

As shown in Figures 5 and 34 to 36, a smoke blocking material 56 is provided along the height direction at the tip portion of the outdoor-side folded piece 500 of the guide body 5. The smoke blocking material 56 is adapted to be in continuous contact along the height direction with both ends of the panel width direction (portions located outside the guide body 5) of the outdoor side portion of the shutter curtain 1 in the fully closed position. More specifically, the panel width direction both ends of the outdoor side surface of the shutter curtain 1 in the fully closed position are composed of the end room outer airtight member 17 attached to the main surface 200 and lower outdoor side surface 202 of the outdoor facing surface 20 of the top panel 2, the end room outer airtight member 17 attached to the main surface 300 and lower outdoor side surface 302 of the outdoor facing surface 30 of the panel 3, the outdoor facing surface 40 of the bottom panel 4, the second part 1661 (Figure 23) which is the exposed surface of both width direction both ends of the outdoor side elastic water stop member 16α, the outdoor side rising piece 61 of the movable seat plate 6, and the outdoor side part of the end water stop member 191 of the elastic water stop member 19. In one embodiment, even when the shutter curtain 1 in the fully closed position is displaced toward the indoor side by horizontal pressure, the smoke blocking material 56 is kept in contact with both width direction both ends of the panel of the outdoor side surface of the shutter curtain 1 (see Figure 6).

An upper smoke blocking material 56' is provided in the lintel portion 130 above the opening across the width of the opening, and the upper smoke blocking material 56' is in contact with the outdoor facing surface 20 of the top panel 2, and both widthwise ends are in contact with the upper ends of the left and right smoke blocking materials 56. The lower ends of the left and right smoke blocking materials 56 are in contact with the floor surface FL. In this embodiment, in a plan view, the smoke blocking material 56 is formed by making a fireproof sheet into a bag shape, the base end side is fixed to the tip portion of the outdoor side folded piece 500, and the curved tip portion is in contact with both widthwise ends of the panel on the outdoor side portion of the shutter curtain 1, but the specific configuration of the smoke blocking material 56 is not limited.

[E-5] Airtight structure of shutter curtain in fully closed position (other embodiment 1)
With reference to Fig. 38, another embodiment of the airtight structure of the shutter curtain in the fully closed position will be described based on the panel 3. In this embodiment, an outdoor airtight member 17α is provided along the lower edge 301 at the upper end of the lower outdoor facing surface (step facing surface) 302 of the panel 3. When the shutter curtain is fully closed, the upper end of the outdoor rising piece 303 of the lower panel 3 is in close contact with the outdoor airtight member 17α at the lower end of the upper panel 3, and the outdoor gap between the lower end of the upper panel 3 and the upper end of the lower panel 3 is blocked over the entire width of the panel. The outdoor portion of the outdoor airtight member 17α is approximately flush with the outdoor facing surface (main surface portion 300) and the outdoor rising piece 303 of the panel 3. Both widthwise end portions of the outdoor airtight member 17α are in contact with the left and right smoke blocking materials 56. In this embodiment, the outdoor side airtight member 17α and the buffer/airtight member 15 are independent of each other.

[E-6] Airtight structure of shutter curtain in fully closed position (other embodiment 2)
With reference to Fig. 39, a further embodiment of the airtight structure of the shutter curtain in the fully closed position will be described based on the panel 3. In this embodiment, no stepped surface is formed below the outdoor-side visible surface 30 of the panel 3. A flat outdoor-side airtight member 17β is provided over the entire width of the panel on either the outdoor-side horizontal surface at the lower end of the upper panel 3 or the outdoor-side horizontal surface at the upper end of the lower panel 3, and when the shutter curtain is fully closed, the outdoor-side airtight member 17β is pressed between the outdoor-side horizontal surface at the lower end of the upper panel 3 and the outdoor-side horizontal surface at the upper end of the lower panel 3, so that the outdoor-side gap between the lower end of the upper panel 3 and the upper end of the lower panel 3 is blocked over the entire width of the panel. The outdoor-side portion of the outdoor-side airtight member 17β is approximately flush with the outdoor-side visible surface 30 of the panel 3, and both widthwise end portions of the outdoor-side airtight member 17β are in contact with the left and right smoke blocking materials 56. In this embodiment, the outdoor side airtight member 17α and the buffer/airtight member 15 are independent of each other.

[E-7] Interlocking structure between panels in a shutter curtain in a fully closed position In this embodiment, a water-stopping structure is formed between the indoor part of the lower part of the upper panel and the indoor part of the upper part of the lower panel in the upper and lower adjacent panels of the shutter curtain 1 in a fully closed position, and an interlocking structure is formed between the lower part of the upper panel and the upper part of the lower panel on the outdoor side of the water-stopping structure. The interlocking structure between the upper and lower adjacent panels of the shutter curtain 1 according to this embodiment will be explained based on the fit of the upper and lower adjacent panels 3 in the shutter curtain 1 in a fully closed position. The underside portion 33 of the upper panel 3 comprises an outdoor-side lower surface (outdoor-side horizontal surface) 330, a trapezoidal portion in a side view consisting of an outdoor-side inclined surface 331, a central horizontal plane 332 and an indoor-side inclined surface 333, and an indoor-side portion (indoor-side vertical surface 334, indoor-side lower surface 335), and the upper side portion 32 of the lower panel 3 comprises an outdoor-side upper surface (outdoor-side horizontal surface) 320, a trapezoidal portion in a side view consisting of an outdoor-side inclined surface 321, a central horizontal plane 322 and an indoor-side inclined surface 323, and an indoor-side portion (indoor-side vertical surface 324, indoor-side lower surface 325). When the shutter curtain is in the fully closed position, the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 form a nested structure by fitting the trapezoidal portion (outdoor-side inclined surface 331, central horizontal surface 332, indoor-side inclined surface 333) of the lower surface portion 33 of the upper panel 3 with the trapezoidal portion (outdoor-side inclined surface 321, central horizontal surface 322, indoor-side inclined surface 323) of the upper surface portion 32 of the lower panel 3. In this embodiment, the nested structure is further formed by the outdoor-side rising piece 303 of the lower panel 3 closely facing the lower outdoor-side visible surface 302 of the upper panel 3. In this embodiment, the fire and smoke prevention performance is improved by the synergistic effect of the airtight structure and the nested structure.

[E-8] Operation as a fireproof shutter The waterproof shutter according to this embodiment is an electric shutter, and in normal operation, it is electrically lowered to close the opening. In the fully closed state of the opening, as described above, an airtight structure (smokeproof structure) is formed in the outdoor side, and a hook structure (fireproof structure) advantageous for fire prevention is formed between the panels adjacent above and below. In the fully closed state of the opening (non-compressed state), the vertical compression mechanism compresses the shutter curtain 1 in the fully closed position vertically, and the horizontal compression mechanism compresses the shutter curtain 1 in the fully closed position in the vertical compression state horizontally, so that the shutter curtain 1 in the fully closed position is in a vertical and horizontal compression state. Even in this state, the airtight structure (smokeproof structure) is maintained (see FIG. 6), and the hook structure (fireproof structure) is maintained (see FIG. 20).

The waterproof shutter according to this embodiment is equipped with a self-weight lowering mechanism for lowering the shutter curtain 1 in a fully open state under its own weight in the event of a fire or the like. More specifically, as shown in FIG. 40, the waterproof shutter is equipped with an automatic closing device that is operated by the input of a fire detection signal, and an operating mechanism that releases and returns the brake of the opening/closing device M. By the operation of the automatic closing mechanism, the operating mechanism takes the brake release position, releases the brake, and the shutter curtain is lowered under its own weight, and the shutter curtain is lowered to the fully closed position and stops in the fully closed position. When an obstacle hits the seat plate 6 at the lower end of the shutter curtain 1 during its own weight lowering, an obstacle detection signal is transmitted to the operating mechanism, and in response to the input of the obstacle detection signal, the operating mechanism takes the brake return position, the brake is returned, and the shutter curtain is stopped during its own weight lowering. When the obstacle is removed, the input of the obstacle detection signal disappears, and the operating mechanism takes the brake release position again, releases the brake, and the shutter curtain is lowered again under its own weight, and the shutter curtain is lowered to the fully closed position and stops in the fully closed position.

The following describes the compression operation after the shutter curtain has reached the fully closed position due to its own weight. In the first mode, the presence or absence of a fire detection signal determines whether the shutter curtain has reached the fully closed position due to its own weight or due to electrical descent. If the fire detection signal is present, it is determined that the shutter curtain has reached the fully closed position due to its own weight, the transmission of the compression signal from the compression button is disabled, and the compression operation is restricted.

In the second mode, compression is possible regardless of whether the shutter curtain in the fully closed position is lowered by its own weight or by electrical power. When a vertical compression signal is sent from the compression button to the vertical compression mechanism, the vertical compression mechanism performs vertical compression of the shutter curtain in the fully closed position, and when a horizontal compression signal is sent from the compression button to the horizontal compression mechanism, the horizontal compression mechanism performs vertical compression of the shutter curtain in the fully closed position.

1 Shutter curtain 2 Top panel 20 Outdoor facing surface 200 Main surface portion 202 Lower outdoor facing surface (step facing surface)
21: Indoor facing surface 22: Upper surface portion 221: Pressurized recess (pressurized portion)
23 Lower surface part 230 Outdoor lower surface 231 Outdoor inclined surface 232 Central horizontal plane 233 Indoor inclined surface 234 Indoor vertical surface 235 Indoor lower surface (pressing part)
25' Upper horizontal reinforcement 25 Middle horizontal reinforcement 26 Lower horizontal reinforcement 27 First vertical reinforcement 28 Second vertical reinforcement 29 Third vertical reinforcement 3 Middle panel (panel)
30 Outdoor facing surface 300 Main surface portion 302 Lower outdoor facing surface (step facing surface)
303 Outdoor side rising piece (projection piece)
31 Indoor side facing surface 310 Indoor side rising piece (outer facing piece of groove, protruding piece)
32 Upper surface part 320 Outdoor side upper surface (outdoor side horizontal surface)
321 Outdoor side inclined surface 322 Central horizontal surface 323 Indoor side inclined surface 324 Indoor side vertical surface (indoor facing surface, stepped indoor facing surface)
3240 First part (groove)
3241 Second part 325 Indoor side lower surface (bottom of groove)
33 Lower surface part 330 Outdoor side lower surface (outdoor side horizontal surface)
331 Outdoor side inclined surface 332 Central horizontal surface 333 Indoor side inclined surface 334 Indoor side vertical surface 335 Indoor side lower surface (pressed portion)
35 Intermediate horizontal reinforcement 36 Lower horizontal reinforcement 37 First vertical reinforcement 38 Second vertical reinforcement 39 Third vertical reinforcement 4 Bottom panel 4' Bottom panel body 40 Outdoor facing surface 400 Outdoor rising piece (projection piece)
41 Indoor side facing surface 410 Indoor side rising piece (outer facing piece of groove, protruding piece)
42 Upper surface portion 420 Outdoor upper surface 421 Outdoor inclined surface 422 Central horizontal surface 423 Indoor inclined surface 424 Indoor vertical surface (inner surface, stepped indoor surface)
425 Indoor side underside (bottom of groove)
43 Lower surface portion 430 Outdoor side lower surface (lower surface of panel body)
431 Indoor side underside (underside of panel body)
47 First vertical reinforcement member 48 Second vertical reinforcement member 45 Middle horizontal reinforcement member 46 Lower horizontal reinforcement member 5 Guide body 55 Watertight rubber member (elastic member)
56 Smoke blocking material 56' Upper smoke blocking material 6 Movable seat plate 60 Bottom surface (indoor side portion is bottom of groove portion)
61 Outdoor side rising piece (outdoor side part of seat board)
62 Indoor side rising piece (outer end piece of groove, protruding piece)
620 Tip edge (upper edge)
63 Outdoor facing surface 64 Indoor facing surface (inner facing surface)
640 First part (groove)
641 Second part 7 Vertical compression mechanism 8 Horizontal compression mechanism 15 Buffer/airtight member (first airtight member)
16 Elastic water-stopping member 16A Hard elastic portion 16B Soft elastic portion 160 Bottom surface 161 Inner facing surface (inner facing portion)
1610: protrusion 162: outer surface 1620: protrusion piece 163: connection surface (first connection surface)
1630: First horizontal surface 1631: First inclined surface 164: Abutted surface 165: Inner facing surface 166: Outer facing surface 1660: First portion 1660': State in which the first portion is crushed 1661: Second portion 1661': Second portion 167 in a bulging state (connecting surface)
1670: second horizontal surface 1671: second inclined surface 16α: elastic water-stopping member (elastic airtight member)
16β Elastic water-stopping member 17 End room outer airtight member (second airtight member)
18 Lower end airtight member (third airtight member)
19 Elastic water-stopping member 190 Intermediate water-stopping member 191 End water-stopping member (lower end air-tight member)
SW Detection switch (obstacle detection switch)
CR Cord Reel
C1 Cord Reel Cable
C2 Relay Cable
C3 Cable 112 extending from the detection switch Relay cable holder 113 Lid 1130 Hole (second insertion portion)
114 Insertion part 118 Caulking material (second waterproofing treatment)
119 Rubber packing (first waterproofing treatment)
121 Cover

Claims (10)

A waterproof shutter is provided with a shutter curtain made up of a plurality of panels, and the shutter curtain is vertically compressed in a fully closed position by a vertical compression means.
The shutter curtain is provided with a long elastic water-stopping member fitted into a groove extending in the width direction of the panel, and when the shutter curtain is in a vertically compressed state, the elastic water-stopping member is pressed by a portion of the shutter curtain to form a water-stopping structure;
The elastic water-stopping member includes a hard elastic portion located within the groove and a soft elastic portion having a portion located outside the groove,
The groove portion has a bottom portion, an inner surface of an outer facing piece rising from an outer end portion of the bottom portion, and a first portion of the inner facing surface facing the outer facing piece of the inner facing surface located inside the bottom portion, and has a generally U-shaped cross section;
the inner facing surface includes a second portion of the inner facing surface adjacent the first portion and positioned outside the groove;
The hard elastic portion of the elastic water-stopping member is fitted into the groove portion,
A part of the soft elastic portion of the elastic water-stopping member is located within the groove portion.
An installation structure for an elastic water-stopping member in a waterproof shutter. A portion of the soft elastic portion located within the groove portion is in close contact with an inner surface of the outer end piece.
2. A mounting structure for an elastic water-stopping member in a waterproof shutter according to claim 1 . The hard elastic portion includes a bottom surface, an inner facing portion, an outer facing portion, and a first connecting surface,
the soft elastic portion includes an abutment surface, an inner facing surface, an outer facing surface, and a second connecting surface in close contact with the first connecting surface,
the first connection surface of the hard elastic portion includes a first horizontal surface and a first inclined surface inclined from an outer side of the first horizontal surface toward a bottom surface,
the second connection surface of the soft elastic portion includes a second horizontal surface and a second inclined surface inclined from an outer side of the second horizontal surface so as to move away from the upper surface,
the first horizontal surface and the second horizontal surface, and the first inclined surface and the second inclined surface are in close contact with each other,
The outer facing surface of the soft elastic portion includes a first portion of the outer facing surface that is in close contact with the inner surface of the outer facing piece, and a second portion of the outer facing surface that is located outside the groove portion,
At least a portion of the outer visible surface surrounded by the first portion and the second inclined surface is located within the groove portion.
3. A mounting structure for an elastic water-stopping member in a waterproof shutter according to claim 2 . In the vertical compression posture of the elastic water-stopping member, the second portion of the outer facing surface bulges outward from the outer surface of the outer facing piece, and a portion of the second portion of the outer facing surface adjacent to the first portion of the outer facing surface is in close contact with the tip edge of the outer facing piece.
4. A mounting structure for an elastic water-stopping member in a waterproof shutter according to claim 3 . The inner facing portion of the hard elastic portion includes an inner facing surface and a plurality of protrusions formed on the inner facing surface and extending in a panel width direction,
The inner facing portion of the hard elastic portion abuts against the first portion of the inner facing surface of the groove portion via the protrusion.
A mounting structure for an elastic water-stopping member in a waterproof shutter according to any one of claims 1 to 4 . the inner facing surface of the hard elastic portion and the inner facing surface of the soft elastic portion are flush with each other;
The inner facing surface of the soft elastic portion is in close proximity to the inner facing surface of the groove portion in a non-vertical compression posture, and is in close contact with the inner facing surface in a vertical compression posture.
6. A mounting structure for an elastic water-stopping member in a waterproof shutter according to claim 5 . A protrusion is formed on an outer end of the hard elastic portion so as to protrude in an inclined manner away from the bottom of the groove portion, and the hard elastic portion is in close contact with an inner surface of the outer end via the protrusion.
A mounting structure for an elastic water-stopping member in a waterproof shutter according to any one of claims 3 to 6 (limited to claims dependent on claim 3) . The groove is formed in the indoor portion near the upper end of the panel,
The shutter curtain portion is an indoor portion near the lower end of the panel located above the panel.
A mounting structure for an elastic water-stopping member in a waterproof shutter according to any one of claims 1 to 7 . The bottom panel at the lower end of the shutter curtain comprises a panel body and a movable seat plate provided at the lower end of the panel body,
The groove is formed in the movable seat plate,
The shutter curtain portion is the lower surface of the panel body.
A mounting structure for an elastic water-stopping member in a waterproof shutter according to any one of claims 1 to 7 . A waterproof shutter is provided with a shutter curtain made up of a plurality of panels, and the shutter curtain is vertically compressed in a fully closed position by a vertical compression means.
The bottom panel at the lower end of the shutter curtain comprises a panel body and a movable seat plate provided at the lower end of the panel body,
The movable seat plate has a groove portion extending in the panel width direction and a long elastic water-stopping member fitted into the groove portion , and when the shutter curtain is in a vertically compressed state, the elastic water-stopping member is pressed by the lower surface of the panel body to form a water-stopping structure.
The elastic water-stopping member includes a hard elastic portion located within the groove and a soft elastic portion having a portion located outside the groove.
An installation structure for an elastic water-stopping member in a waterproof shutter.

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